Common use of RIGHTS CERTIFICATE Clause in Contracts

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated as of June 1, 2016 and as further amended, supplemented or restated from time to time (the “Rights Agreement”) between Trevali Mining Corporation, a corporation incorporated under the laws of British Columbia (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of Canada, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation (a “Common Share”) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the Form of Election to Exercise duly executed and submitted to the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the Rights. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, redeemed by the Corporation at a redemption price of Cdn.$0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1April 10, 2016 and as further amended, supplemented or restated from time to time 2024 (the “Rights Agreement”) between Trevali Mining CorporationENERGY FUELS INC., a corporation incorporated existing under the laws of British Columbia the Province of Ontario (the “Corporation”), and Computershare Investor Services Inc.EQUINITI TRUST COMPANY, a company incorporated under the laws of CanadaLLC, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one (1) fully paid common share Common Share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the principal office of the Rights Agent at its principal office in VancouverNew York, British Columbia or, New York USA or with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until The Exercise Price shall initially be $10.00 per Right and shall be subject to adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one (1) whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION ByATTEST: Name: Title: COMPUTERSHARE INVESTOR SERVICES ENERGY FUELS INC. By: NameCountersigned: TitleEQUINITI TRUST COMPANY, LLC By: TO: Authorized Signature [Form of Reverse Side of Rights Certificate] FORM OF ASSIGNMENT (To be attached executed by the registered holder if such holder desires to each transfer the Rights Certificates.) FOR VALUE RECEIVED hereby sells, assigns and transfers Unto (Please print name and address transferee) this Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned , together with all right, title and interest therein, and does hereby irrevocably elects constitute and appoint Attorney, to exercise whole Rights represented by transfer the attached within Rights Certificate to purchase on the Common Shares issuable upon books of the exercise within-named Corporation, with full power of such Rights and requests that certificates for such shares be issued in the name ofsubstitution. Dated: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature Guaranteed Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever.) Signature Guaranteed (Signature must be guaranteed by a Canadian Schedule 1 Canadian Chartered I chartered bank, or by a medallion guarantee by financial institution that is a member of a recognized medallion program, STAMP, SEMP and MSP. Medallion Signature Guarantee Program.) (To be completed if true) CERTIFICATION The undersigned hereby representsrepresents and certifies, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never not been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing Acquiring Person or with any Affiliate or Associate thereof (all as defined in the Rights Agreement).. Signature

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder a Rights Plan Agreement dated made as of June 1March 29, 2016 and as further amended, supplemented or restated from time to time 2006 (the “"Rights Agreement”") between Trevali Mining CorporationKINROSS GOLD CORPORATION, a corporation incorporated amalgamated under the laws of British Columbia BUSINESS CORPORATIONS ACT (Ontario) (the “"Corporation”"), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaInc.., as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “"Common Share”") (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in any of the cities designated from time Cities of Toronto, Montreal, Winnipeg, Calgary or Vancouver, Canada. The Exercise Price shall initially be $90 per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).:_____________________________

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated made as of June 1October ____, 2016 and as further amended, supplemented or restated from time to time 1999 (the “"Rights Agreement”") between Trevali Mining CorporationAltair International Inc., a corporation incorporated subsisting under the laws of British Columbia the Province of Ontario (the “"Corporation”), ") and Computershare Investor Equity Transfer Services Inc., a company incorporated under the laws of CanadaOntario, as Rights Agent (the “"Rights Agent”"), which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation Corporation, at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one-half of one fully paid common share of the Corporation (a “"Common Share”") at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate Certificate, together with the Form of Election to Exercise appropriately completed and duly executed and submitted executed, to the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the CorporationToronto. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ US$20 per Right (Canadian) per Rightpayable by certified cheque or money order payable to the order of the Corporation). In certain circumstances described in The number of Common Shares which may be purchased for the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof Exercise Price is subject to purchase more or less than one Common Share, all adjustment as provided set forth in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders holder of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices principal office of the Rights Agent designated for such purposein Toronto, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, Agreement the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.0000001 per Right, Right subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereofthereof a payment by certified cheque, a cash payment banker's draft or money order will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of any meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, rights or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES ALTAIR INTERNATIONAL INC. By: NameCountersigned: TitleEQUITY TRANSFER SERVICES INC. Per: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE ALTAIR INTERNATIONAL INC. The undersigned hereby irrevocably elects to exercise exercise______________ whole Rights represented by the attached this Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Common Shares be issued in the name ofof and delivered to: Rights Certificate No. ------------------ Name Address City and Province Social Insurance No. or other taxpayer identification number If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Name Address City and Province Social Insurance, Social Security Insurance No. or other Taxpayer Identification Number Pertaxpayer identification number Date: Dated -------------------------- Signature Signature Guaranteed (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bankchartered bank or major Canadian trust company, or by a medallion guarantee by a member of a recognized medallion program, the Securities Transfer Association Medallion Program (STAMP, SEMP and MSP). (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or by an Affiliate or Associate thereof or by of an Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Affiliate or Associate of any such other Person (as such terms are defined in the Rights Agreement). Signature NOTICE In the event that the certifications set forth above in the Form of Election to Exercise and Assignment are not completed, the Corporation shall deem the Beneficial Owner of the foregoing Rights represented by this Rights Certificate to be an Acquiring Person (all as defined in the Rights Agreement) and, accordingly, such Rights shall be null and void. FORM OF ASSIGNMENT FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto (Please print name and address of transferee) the Rights represented by this Rights Certificate, together with all right, title and interest therein. Date: ---------------------- Signature (Signature Guaranteed (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature must be guaranteed by a Canadian chartered bank or major Canadian trust company, or a member of the Securities Transfer Association Medallion Program (STAMP). (To be completed by the assignor if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not and, to the knowledge of the undersigned have never been, Beneficially Owned by an Acquiring Person or by an Affiliate or Associate of an Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Affiliate or Associate of any such other Person (as such terms are deemed in the Rights Agreement).

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, above each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated April 17, 2012, as of June 1, 2016 amended and as further amended, supplemented or restated from time to time (the “Rights Agreement”) between Trevali Mining CorporationGreat Panther Silver Limited, a corporation incorporated company continued under the laws of British Columbia Columbia, (the “Corporation”), and Computershare Investor Services Inc., a company corporation incorporated under the laws of Canada, as Rights Agent rights agent (the “Rights Agent”), which term shall include any successor Rights Agent under the Rights Agreement), ) to purchase from the Corporation at any time after the Separation Time (as such term is defined in the Rights Agreement) and prior to the Expiration Time (as such terms are term is defined in the Rights Agreement), ) (or such earlier expiration time as is provided in the Rights Agreement) one fully paid common share and non- assessable Common Share of the Corporation (a “Common Share”) at the Exercise Price price referred to below, upon presentation and surrender of this Rights Certificate together with the Form of Election to Exercise duly executed and submitted to the Rights Agent at its it principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent offices in the cities designated from time City of Vancouver. The Exercise Price shall initially be $50 (Canadian) per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Sharereceive assets, debt securities or other equity securities of the Corporation (or a combination thereof) all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the Rights. Copies of the Rights Agreement are on file at the registered head office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal entitling the holder to the purchase a like aggregate number of Common Shares as the Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Rights Certificate may be, and under certain circumstances are required to be, redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or vote, receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities of the Corporation which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, hereof any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders of the Corporation at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders of the Corporation (except as expressly provided in the Rights Agreement), or to receive dividends distributions or subscription rights, or otherwise, otherwise until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been manually countersigned by the Rights Agent. WITNESS the facsimile signature signatures of the proper officers of the Corporation and its corporate sealCorporation. DateDATED: TREVALI MINING CORPORATION GREAT PANTHER SILVER LIMITED By: NameAuthorized Signing Officer By: TitleAuthorized Signing Officer Countersigned By: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: Authorized Signing Officer 37 (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE TO: GREAT PANTHER SILVER LIMITED The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Common Shares be issued to: (Name) (Address) (City and Province) If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name ofof and delivered to: Name Address (Name) (Address) (City and Province) Social Insurance, Social Security social security or other Taxpayer Identification Number Per: Dated taxpayer number DATED ___________________________________________ Signature Guaranteed Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever.) Signature Guaranteed Signature must be guaranteed by an – “Eligible Institution” i.e. a Canadian Schedule 1 Canadian Chartered chartered bank, or by a medallion guarantee by major trust company in Canada, a member of the Securities Transfer Association Medallion Program (STAMP), a member of the Stock Exchange Medallion Program (SEMP) or a member of the New York Stock Exchange, Inc. Medallion Signature Program (MSP). Members of these programs are usually members of a recognized medallion programstock exchange in Canada and the United States, STAMPmembers of the Investment Industry Regulatory Organization of Canada (IIROC), SEMP members of the National Association of Securities Dealers, or of banks and MSPtrust companies in the United States. (To be completed if true) true The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Person, any Affiliate or Associate thereof of such Acquiring Person or by any Person acting jointly or in concert with the Acquiring Person, or with any Affiliate or Associate of the foregoing Acquiring Person, or any Affiliate or Associate of such Persons so acting jointly or in concert (all each as defined in the Rights Agreement).. Signature 39

RIGHTS CERTIFICATE. This certifies that _________________________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1February 3, 2016 2009, as amended and as further amendedrestated effective March 29, supplemented or restated from time to time 2018 (the “Rights Agreement”) between Trevali Mining CorporationENERGY FUELS INC., a corporation incorporated existing under the laws of British Columbia the Province of Ontario (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaAST TRUST COMPANY (CANADA), as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one (1) fully paid common share Common Share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the principal office of the Rights Agent at its principal office in VancouverToronto, British Columbia or, Ontario or with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until The Exercise Price shall initially be $10.00 per Right and shall be subject to adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one (1) whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).:

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1April 22, 2016 and as further amended, supplemented or restated from time to time 2017 (the “Rights Agreement”) between Trevali Mining CorporationNEXGEN ENERGY LTD., a corporation incorporated existing under the laws of the Province of British Columbia (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaCOMPUTERSHARE INVESTOR SERVICES INC., as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted payment of the Exercise Price by way of certified cheque, bank draft or money order made payable to the Rights Agent Corporation at its the principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from City of Toronto, Canada. The Exercise Price shall initially be an amount equal to three time the Market Price per Common Share as at the Separation Time per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices office of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION NEXGEN ENERGY LTD. By: Name: ● Title: ● By: Name: ● Title: ● COMPUTERSHARE INVESTOR SERVICES INC. Countersigned: By: NameAuthorized Signatory Date: Title: TO: (To be attached to each [Form of Reverse Side of Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).]

RIGHTS CERTIFICATE. This certifies that , or registered assigns, [ ] is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Second Amended and Restated Shareholder Rights Plan Agreement dated as of June 1May 11, 2016 and as further amended, supplemented or restated from time to time 2017 (the “Rights Agreement”) between Trevali Mining CorporationNew Flyer Industries Inc., a corporation incorporated under the laws of British Columbia Canada, (the “Corporation”), ) and Computershare Investor Services Inc., a company corporation incorporated under the laws of CanadaOntario, as Rights Agent (the “Rights Agent”), which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation Corporation, at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation (a “Common Share”) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate Certificate, together with the Form of Election to Exercise appropriately completed and duly executed and submitted executed, to the Rights Agent at its principal office in VancouverXxxxxxx, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the CorporationXxxxxxx. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ $200.00 per Right (Canadian) per Rightpayable in cash, certified cheque or money order payable to the order of the Corporation). In certain circumstances described in The number of Shares which may be purchased for the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof Exercise Price is subject to purchase more or less than one Common Share, all adjustment as provided set forth in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices principal office of the Rights Agent designated for such purposein Xxxxxxx, Xxxxxxx, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may be adjusted so as to entitle the registered holder thereof to purchase or receive securities in the capital of the Corporation other than Shares or more or less than one Share (or a combination thereof), all as provided in the Rights Agreement. The number of Shares which may be purchased for the Exercise Price is subject to adjustment as set forth in the Rights Agreement. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Rights Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, Right subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, thereof a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of any meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends distributions or subscription rights, rights or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION [ ] NEW FLYER INDUSTRIES INC. By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) 33550-2002 23033215.4 FORM OF ELECTION TO EXERCISE NEW FLYER INDUSTRIES INC. The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached this Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Shares be issued in the name ofof and delivered to: Rights Certificate No. Name Address City and Province Social Insurance No. or other taxpayer identification numbers If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Name Address City and Province Social Insurance, Social Security Insurance No. or other Taxpayer Identification Number Pertaxpayer identification numbers Date: Dated Signature (Signature must correspond to name as written Written Signature Guaranteed upon the face of this Rights Certificate in every particular, particular without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a major Canadian trust company, a Schedule 1 Canadian Chartered chartered bank, or by a medallion guarantee by a member of a recognized medallion program, stock exchange in Canada or a member of the Securities Transfer Association Medallion (STAMP, SEMP and MSP) Program. (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person Person, any Associate or Affiliate of an Affiliate or Associate thereof or by Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Associate or Affiliate of such Acquiring Person, or an Associate or Affiliate of such Person so acting jointly or in concert (as such terms are defined in the Rights Agreement). Signature NOTICE If the certification set forth above in the Form of Election to Exercise is not completed, the Corporation is entitled to treat the Beneficial Owner of the foregoing Rights represented by this Rights Certificate to be an Acquiring Person (all as defined in the Rights Agreement) and, accordingly, such Rights shall be null and void. FORM OF ASSIGNMENT FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto (Please print name and address of transferee) the Rights represented by this Rights Certificate, together with all right, title and interest therein. Date: Signature (Signature must correspond to name as written Written Signature Guaranteed upon the face of this Rights Certificate in every particular without alteration or enlargement or any change whatsoever) Signature must be guaranteed by a major Canadian trust company, a Schedule 1 Canadian chartered bank, a member of a recognized stock exchange in Canada or a member of the Securities Transfer Association Medallion (STAMP) Program. (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Shares, that the Rights evidenced by this Rights Certificate are not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person, any Associate or Affiliate of an Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Associate or Affiliate of such Acquiring Person, or an Associate or Affiliate of such Person so acting jointly or in concert (as such terms are defined in the Rights Agreement).. Signature (Please print name below signature)

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder a Rights Plan Agreement dated made as of June 1April 11, 2016 and as further amended, supplemented or restated from time to time 2011 (the “Rights Agreement”) between Trevali Mining CorporationSANDSTORM GOLD LTD., a corporation incorporated existing under the laws of the Province of British Columbia (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaCOMPUTERSHARE INVESTOR SERVICES INC., as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted payment of the Exercise Price by way of certified cheque, bank draft or money order made payable to the Rights Agent Corporation at its the principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time Vancouver, British Columbia. The Exercise Price shall initially be $100.00 per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices office of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INCSANDSTORM GOLD LTD. By: NameAuthorized Signatory Countersigned: TitleCOMPUTERSHARE TRUST COMPANY By: TOAuthorized Signatory By: Authorized Signatory Date: April ·, 2011 [Form of Reverse Side of Rights Certificate] FORM OF TRANSFER (To be attached executed by the registered holder if such holder desires to each transfer the Rights Certificates.) FOR VALUE RECEIVED hereby sells, assigns and transfers unto (Please print name and address of transferee) this Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned , together with all right, title and interest therein, and does hereby irrevocably elects constitute and appoint Attorney, to exercise whole Rights represented by transfer the attached within Rights Certificate to purchase on the Common Shares issuable upon books of the exercise within-named Corporation, with full power of such Rights and requests that certificates for such shares be issued in the name ofsubstitution. Dated: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature Guaranteed Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed (Signature must be guaranteed by a Canadian Schedule 1 Canadian Chartered I chartered bank, or by a medallion guarantee by financial institution that is a member of a recognized medallion program, Medallion Signature Guarantee Program (STAMP, SEMP and MSP). (To be completed if true) CERTIFICATION The undersigned hereby representsrepresents and certifies, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never not been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing Acquiring Person or with any Affiliate or Associate thereof (all as defined in the Rights Agreement).. Signature

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder a Rights Plan Agreement Agreement, dated as of June 1May 5, 2016 and 2017, as further same may be amended, supplemented restated, varied or restated replaced from time to time (the “Rights Agreement”) between Trevali Mining Corporation, Mongolia Growth Group Ltd. a corporation incorporated existing under the laws of British Columbia Business Corporations Act (Alberta) (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws Trust Company of Canada, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in any of the cities designated from time Cities of Toronto, Calgary or Vancouver, Canada. The Exercise Price shall initially be $100 per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder Holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION ByATTEST: Name: Title: COMPUTERSHARE INVESTOR SERVICES INCMONGOLIA GROWTH GROUP LTD. By: Name: Title: TOCountersigned: COMPUTERSHARE TRUST COMPANY OF CANADA By: Name: Title: [Form of Reverse Side of Rights Certificate] FORM OF ASSIGNMENT (To be attached executed by the registered holder if such holder desires to each transfer the Rights Certificates.) FOR VALUE RECEIVED hereby sells, assigns and transfers unto (Please print name and address of transferee) this Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned , together with all right, title and interest therein, and does hereby irrevocably elects constitute and appoint Attorney, to exercise whole Rights represented by transfer the attached within Rights Certificate to purchase on the Common Shares issuable upon books of the exercise within-named Corporation, with full power of such Rights and requests that certificates for such shares be issued in the name ofsubstitution. Dated: Name Address Social Insurance, Social Security or other Taxpayer Identification Number PerSignature Guaranteed: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature The signature(s) on this form must also be guaranteed by one of the following methods: • In Canada and the US: a Medallion Guarantee obtained from a member of an acceptable Medallion Guarantee Program (STAMP, SEMP or MSP). Many banks, credit unions and broker dealers are members of a Medallion Guarantee Program. The guarantor must affix a stamp in the space above bearing the actual words “Medallion Guaranteed”. • In Canada: a Signature Guarantee obtained from a major Canadian Schedule 1 Canadian Chartered bank, or by a medallion guarantee by I bank that is not a member of a recognized medallion program, STAMP, SEMP Medallion Guarantee Program. The guarantor must affix a stamp in the space above bearing the actual words “Signature Guaranteed”. • Outside Canada and MSPthe US: holders must obtain a guarantee from a local financial institution that has a corresponding affiliate in Canada or the US that is a member of an acceptable Medallion Guarantee Program. The corresponding affiliate must overguarantee the guarantee provided by the local financial institution. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1March 18, 2016 and as further amended, supplemented or restated from time to time 2021 (the “Rights Agreement”) between Trevali Mining CorporationENERGY FUELS INC., a corporation incorporated existing under the laws of British Columbia the Province of Ontario (the “Corporation”), and Computershare Investor Services Inc.AMERICAN STOCK TRANSFER & TRUST COMPANY, a company incorporated under the laws of CanadaLLC, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one (1) fully paid common share Common Share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the principal office of the Rights Agent at its principal office in VancouverBrooklyn, British Columbia or, New York USA or with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until The Exercise Price shall initially be $10.00 per Right and shall be subject to adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one (1) whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION ByATTEST: Name: Title: COMPUTERSHARE INVESTOR SERVICES ENERGY FUELS INC. By: NameCountersigned: TitleAMERICAN STOCK TRANSFER & TRUST COMPANY, LLC By: TO: Authorized Signature [Form of Reverse Side of Rights Certificate] FORM OF ASSIGNMENT (To be attached executed by the registered holder if such holder desires to each transfer the Rights Certificates.) FOR VALUE RECEIVED hereby sells, assigns and transfers Unto (Please print name and address transferee) this Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned , together with all right, title and interest therein, and does hereby irrevocably elects constitute and appoint Attorney, to exercise whole Rights represented by transfer the attached within Rights Certificate to purchase on the Common Shares issuable upon books of the exercise within-named Corporation, with full power of such Rights and requests that certificates for such shares be issued in the name ofsubstitution. Dated: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature Guaranteed Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed (Signature must be guaranteed by a Canadian Schedule 1 Canadian Chartered I chartered bank, or by a medallion guarantee by financial institution that is a member of a recognized medallion program, STAMP, SEMP and MSPMedallion Signature Guarantee Program. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).

RIGHTS CERTIFICATE. This certifies that _________________________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1April 10, 2016 and as further amended, supplemented or restated from time to time 2024 (the “"Rights Agreement”") between Trevali Mining CorporationENERGY FUELS INC., a corporation incorporated existing under the laws of British Columbia the Province of Ontario (the “"Corporation”"), and Computershare Investor Services Inc.EQUINITI TRUST COMPANY, a company incorporated under the laws of CanadaLLC, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one (1) fully paid common share Common Share in the capital of the Corporation (a “"Common Share”") (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the principal office of the Rights Agent at its principal office in VancouverNew York, British Columbia or, New York USA or with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until The Exercise Price shall initially be $10.00 per Right and shall be subject to adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one (1) whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION ByATTEST: Name: Title: COMPUTERSHARE INVESTOR SERVICES ENERGY FUELS INC. By: NameCountersigned: TitleEQUINITI TRUST COMPANY, LLC By: TO: Authorized Signature 39 [Form of Reverse Side of Rights Certificate] FORM OF ASSIGNMENT (To be attached executed by the registered holder if such holder desires to each transfer the Rights Certificates.) FOR VALUE RECEIVED hereby sells, assigns and transfers Unto (Please print name and address transferee) this Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned , together with all right, title and interest therein, and does hereby irrevocably elects constitute and appoint ______________________________ Attorney, to exercise whole Rights represented by transfer the attached within Rights Certificate to purchase on the Common Shares issuable upon books of the exercise within-named Corporation, with full power of such Rights and requests that certificates for such shares be issued in the name ofsubstitution. Dated: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature Guaranteed Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever.) Signature Guaranteed (Signature must be guaranteed by a Canadian Schedule 1 Canadian Chartered I chartered bank, or by a medallion guarantee by financial institution that is a member of a recognized medallion program, STAMP, SEMP and MSP. Medallion Signature Guarantee Program.) (To be completed if true) CERTIFICATION The undersigned hereby representsrepresents and certifies, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never not been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing Acquiring Person or with any Affiliate or Associate thereof (all as defined in the Rights Agreement).. Signature

RIGHTS CERTIFICATE. This certifies that __________________________________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1April 22, 2016 and as further amended, supplemented or restated from time to time 2017 (the “Rights Agreement”) between Trevali Mining CorporationNEXGEN ENERGY LTD., a corporation incorporated existing under the laws of the Province of British Columbia (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaCOMPUTERSHARE INVESTOR SERVICES INC., as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted payment of the Exercise Price by way of certified cheque, bank draft or money order made payable to the Rights Agent Corporation at its the principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from City of Toronto, Canada. The Exercise Price shall initially be an amount equal to three time the Market Price per Common Share as at the Separation Time per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices office of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION _____________________ NEXGEN ENERGY LTD. By: Name: • Title: • By: Name: • Title: • COMPUTERSHARE INVESTOR SERVICES INC. Countersigned: By: NameAuthorized Signatory Date: Title: TO: A - 4 [Form of Reverse Side of Rights Certificate] FORM OF TRANSFER (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented executed by the attached Rights Certificate registered holder if such holder desires to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that transfer the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights AgreementCertificates.).

RIGHTS CERTIFICATE. This certifies that _____________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated as of June 1May 2, 2016 and 2013, as further amended, supplemented or restated from time to time (the “"Rights Agreement”") between Trevali Jaguar Mining CorporationInc., a corporation incorporated under the laws of British Columbia Ontario (the “"Corporation”), ") and Computershare Investor Services Inc., a company corporation incorporated under the laws of Canada, as Rights Agent (the “"Rights Agent”", which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation (a “"Common Share”") at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the Form of Election to Exercise duly executed and submitted to the Rights Agent at its principal office in Vancouverthe City of Xxxxxxx, British Columbia orXxxxxxx, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ $• (Canadian) per Right, payable to the order of the Corporation by certified cheque, banker's draft or money order. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the Rights. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, redeemed by the Corporation at a redemption price of Cdn.$0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI _________________________ JAGUAR MINING CORPORATION ByINC. Per: Name: Title: Per: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. ByPer: Name: Title: TOPer: Name: Title: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE TO: JAGUAR MINING INC. AND TO: COMPUTERSHARE INVESTOR SERVICES INC. The undersigned hereby irrevocably elects to exercise ________________________________ whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address City and Province Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a major Schedule 1 Canadian Chartered bank, chartered bank or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSPMedallion Guarantee Program. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person (or an Affiliate or Associate thereof of an Acquiring Person, or by any Person acting jointly or in concert with an Acquiring Person or any Affiliate or Associate of the foregoing such other Person) (all as defined in the Rights Agreement).. Signature

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated made as of June 1April , 2016 and as further amended, supplemented or restated from time to time 2005 (the “Rights Agreement”) between Trevali Mining CorporationGSI Group Inc., a corporation incorporated existing under the laws of British Columbia New Brunswick (the “Corporation”), ) and Computershare Investor Services Inc.Services, a trust company incorporated under the laws of Canada, as Rights Agent (the “Rights Agent”), which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation Corporation, at any time after the Separation Time and prior to the Expiration Time (as such terms are arc defined in the Rights Agreement), one fully paid common share of the Corporation (a “Common Share”) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate Certificate, together with the Form of Election to Exercise appropriately completed and duly executed and submitted executed, to the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the CorporationToronto. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ $200.00 per Right (Canadian) per Rightpayable by certified cheque, bankers draft or money order payable to the order of the Corporation). In certain circumstances described in The number of Common Shares which maybe purchased for the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof Exercise Price is subject to purchase more or less than one Common Share, all adjustment as provided set forth in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are arc hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders holder of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices principal office of the Rights Agent designated for such purposein Toronto, Ontario may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, hereof another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, Agreement the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.000001 per Right, Right subject to adjustment in certain events. No fractional Common Shares will be issued upon the The exercise of any Right or Rights evidenced hereby, but in lieu thereof, thereof a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of any meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, rights or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION ByGSI GROUP INC. Per: NamePer: TitleCountersigned: COMPUTERSHARE INVESTOR SERVICES INC. BySERVICES, in the City of Toronto Per: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE TO: GSI GROUP INC. The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached this Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Common Shares be issued in the name ofof and delivered to: Name Address City and Province Social Insurance, Social Security Insurance No. or other Taxpayer Identification Number Pertaxpayer identification number If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Dated Name Address City and Province Social Insurance No. or other taxpayer identification number Date: Signature Signature Guaranteed (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bankchartered bank or trust company, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSPstock exchange in Canada or a member of the Securities Transfer Association Medallion (Stamp) Program. (To be he completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or by an Affiliate or Associate thereof or by of an Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Affiliate or Associate of the foregoing any such other Person (all as such terms arc defined in the Rights Agreement).. Signature

RIGHTS CERTIFICATE. This certifies that , or registered assigns, [ ] is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement dated made as of June 1August 28, 2016 and as further amended, supplemented or restated from time to time 2013 (the “Rights Agreement”) between Trevali Mining CorporationAltai Resources Inc., a corporation incorporated company existing under the laws of British Columbia the Province of Ontario (the “CorporationCompany”), ) and Computershare Investor Services Inc., a trust company incorporated formed under the laws of Canada, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation Company, at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation Company (a “Common Share”) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate Certificate, together with the Form of Election to Exercise appropriately completed and duly executed and submitted executed, to the Rights Agent at its principal office in VancouverXxxxxxx, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated Xxxxxxx. The Exercise Price per Right shall be determined from time to time by in accordance with the Corporation. Until adjustment thereof in certain events as provided in terms of the Rights AgreementAgreement (payable by certified cheque, banker’s draft or money order payable to the order of the Company). The number of Common Shares which may be purchased for the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof is subject to purchase more or less than one Common Share, all adjustment as provided set forth in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation Company and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation Company and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices principal office of the Rights Agent designated for such purposein Xxxxxxx, Xxxxxxx, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may be adjusted so as to entitle the registered holder thereof to purchase or receive securities or Common Shares in the capital of the Company other than Common Shares or more or less than one Common Share (or a combination thereof), all as provided in the Rights Agreement. The number of Common Shares which may be purchased for the Exercise Price is subject to adjustment as set forth in the Rights Agreement. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation Company at a redemption price of Cdn.$0.00001 $0.00001 per Right, Right subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, thereof a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or vote, receive dividends distributions or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained herein or in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation Company or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate actionaction involving the Company, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends distributions or subscription rights, rights or otherwise, until the such Rights evidenced by this Rights Certificate shall have been exercised as provided in accordance with the provisions of the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers authorized signatory of the Corporation and its corporate sealCompany. Date: TREVALI MINING CORPORATION By[ ] ALTAI RESOURCES INC. Per: Name: Title: Per: Name: Title: Countersigned this ● day of ●, ●. COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) Authorized Signatory FORM OF ELECTION TO EXERCISE RIGHTS ISSUED BY ALTAI RESOURCES INC. To: Computershare Investor Services Inc. The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached this Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Common Shares be issued in the name ofof and delivered to: Name Address City and Province Social Insurance, Social Security Insurance No. or other Taxpayer Identification Number Pertaxpayer identification numbers If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Dated Name Address City and Province Social Insurance No. or other taxpayer identification numbers Date: Signature (Signature must correspond to name as Signature Guaranteed written upon the face of this Rights Certificate in every particular, particular without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, Bank or by a medallion guarantee by Financial Institution that is a member of a recognized medallion program, STAMP, MSP or SEMP and MSPProgram. (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Company and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or by an Affiliate or Associate thereof or by of an Acquiring Person, any Person acting jointly or in concert with any of the foregoing an Acquiring Person (all as such terms are defined in the Rights Agreement).. Date: Signature

RIGHTS CERTIFICATE. This certifies that , or registered assigns, [ ] is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Third Amended and Restated Shareholder Rights Plan Agreement dated as of June 1May 7, 2016 and as further amended, supplemented or restated from time to time 2020 (the “Rights Agreement”) between Trevali Mining CorporationNFI Group Inc., a corporation incorporated under the laws of British Columbia Canada, (the “Corporation”), ) and Computershare Investor Services Inc., a company corporation incorporated under the laws of CanadaOntario, as Rights Agent (the “Rights Agent”), which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation Corporation, at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation (a “Common Share”) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate Certificate, together with the Form of Election to Exercise appropriately completed and duly executed and submitted executed, to the Rights Agent at its principal office in VancouverXxxxxxx, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the CorporationXxxxxxx. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ $200.00 per Right (Canadian) per Rightpayable in cash, certified cheque or money order payable to the order of the Corporation). In certain circumstances described in The number of Shares which may be purchased for the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof Exercise Price is subject to purchase more or less than one Common Share, all adjustment as provided set forth in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices principal office of the Rights Agent designated for such purposein Xxxxxxx, Xxxxxxx, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may be adjusted so as to entitle the registered holder thereof to purchase or receive securities in the capital of the Corporation other than Shares or more or less than one Share (or a combination thereof), all as provided in the Rights Agreement. The number of Shares which may be purchased for the Exercise Price is subject to adjustment as set forth in the Rights Agreement. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Rights Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, Right subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, thereof a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of any meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends distributions or subscription rights, rights or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION [ ] NFI GROUP INC. By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE NFI GROUP INC. The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached this Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares Shares be issued in the name ofof and delivered to: Rights Certificate No. Name Address City and Province Social Insurance No. or other taxpayer identification numbers If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Name Address City and Province Social Insurance, Social Security Insurance No. or other Taxpayer Identification Number Pertaxpayer identification numbers Date: Dated Signature (Signature must correspond to name as written Written Signature Guaranteed upon the face of this Rights Certificate in every particular, particular without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a major Canadian trust company, a Schedule 1 Canadian Chartered chartered bank, or by a medallion guarantee by a member of a recognized medallion program, stock exchange in Canada or a member of the Securities Transfer Association Medallion (STAMP, SEMP and MSP) Program. (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person Person, any Associate or Affiliate of an Affiliate or Associate thereof or by Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Associate or Affiliate of such Acquiring Person, or an Associate or Affiliate of such Person so acting jointly or in concert (as such terms are defined in the Rights Agreement). Signature NOTICE If the certification set forth above in the Form of Election to Exercise is not completed, the Corporation is entitled to treat the Beneficial Owner of the foregoing Rights represented by this Rights Certificate to be an Acquiring Person (all as defined in the Rights Agreement) and, accordingly, such Rights shall be null and void. FORM OF ASSIGNMENT FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto (Please print name and address of transferee) the Rights represented by this Rights Certificate, together with all right, title and interest therein. Date: Signature (Signature must correspond to name as written Written Signature Guaranteed upon the face of this Rights Certificate in every particular without alteration or enlargement or any change whatsoever) Signature must be guaranteed by a major Canadian trust company, a Schedule 1 Canadian chartered bank, a member of a recognized stock exchange in Canada or a member of the Securities Transfer Association Medallion (STAMP) Program. (To be completed by the holder if true) The undersigned hereby represents, for the benefit of the Corporation and all holders of Rights and Shares, that the Rights evidenced by this Rights Certificate are not and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person, any Associate or Affiliate of an Acquiring Person, any other Person acting jointly or in concert with an Acquiring Person or any Associate or Affiliate of such Acquiring Person, or an Associate or Affiliate of such Person so acting jointly or in concert (as such terms are defined in the Rights Agreement).. Signature (Please print name below signature)

RIGHTS CERTIFICATE. This certifies that _________________________ , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated a Shareholder Rights Plan Agreement dated made as of June 1February 3, 2016 and as further amended, supplemented or restated from time to time 2009 (the “Rights Agreement”) between Trevali Mining CorporationENERGY FUELS INC., a corporation incorporated existing under the laws of British Columbia the Province of Ontario (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaCIBC MELLON TRUST COMPANY, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one (1) fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the principal office of the Rights Agent at its principal office in VancouverToronto, British Columbia or, Ontario or with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time to time by the Corporation. Until The Exercise Price shall initially be $10.00 per Right and shall be subject to adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one (1) whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).:

RIGHTS CERTIFICATE. This certifies that , or registered assigns, (insert name of Rights holder) is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder Rights Plan Agreement Agreement, dated as of June 1February 3, 2016 and as further amended2022, supplemented or restated from time to time (the “"Rights Agreement”") between Trevali Mining Corporation, a corporation incorporated under the laws of British Columbia (the “Corporation”)Noble Mineral Exploration Inc., and Computershare Investor Services Inc., a company incorporated under the laws of Canada, TSX Trust Company,as Rights Agent (the “"Rights Agent”", which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share of the Corporation (a “"Common Share”") at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the Form of Election to Exercise duly executed and submitted to the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval City of the Rights Agent, Toronto or at any other office of the Rights Agent in the cities designated from time to time for that purpose by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ [$●] (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the Rights. Copies of the Rights Agreement are on file at the registered head office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.001 (Canadian) per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in lieu thereof, a cash payment will be made, as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable upon the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate sealCorporation. Date: TREVALI MINING CORPORATION By: NOBLE MINERAL EXPLORATION INC. Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. ByCountersigned: TSX TRUST COMPANY Name: Title: TO: (To be attached to each Rights Certificaterights certificate) FORM OF ELECTION TO EXERCISE TO: NOBLE MINERAL EXPLORATION INC. The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued registered in the name of: Name Address Name: Address: Social Insurance, Social Security or other Other Taxpayer Identification Number PerNumber: Dated If such number of Rights shall not be all the Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such Rights shall be registered in the name of and delivered to: Name: Address: Social Insurance, Social Security or Other Taxpayer Identification Number: Dated: Signature: Signature Guaranteed: (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature If the holder of Rights signing this Form of Election to Exercise is registering the underlying Common Shares in the name of someone other than itself, then the signature must be guaranteed by a Schedule 1 Canadian Chartered chartered bank, a Canadian trust company or by a medallion guarantee by a member of the Securities Transfer Association Medallion Program (STAMP), a recognized medallion programmember of the Stock Exchange Medallion Program (SEMP) or a member of the New York Stock Exchange, STAMP, SEMP and Inc. Medallion Signature Program (MSP). (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).

RIGHTS CERTIFICATE. This certifies that ____________________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of the Amended and Restated Shareholder a Rights Plan Agreement dated made as of June 1April 29, 2016 and as further amended, supplemented or restated from time to time 2015 (the “Rights Agreement”) between Trevali Mining CorporationNEW GOLD INC., a corporation incorporated under the laws of Business Corporations Act (British Columbia Columbia) (the “Corporation”), and Computershare Investor Services Inc., a company incorporated under the laws of CanadaCOMPUTERSHARE INVESTOR SERVICES INC., as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted a certified cheque or money order made payable to the Corporation of a sum equal to the Exercise Price multiplied by the number of Rights Agent being exercised at its the principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in the cities designated from time City of Vancouver, Canada. The Exercise Price shall initially be $100.00 per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any of the offices office of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).:

RIGHTS CERTIFICATE. This certifies that , or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles entities the registered holder thereof, subject to the terms, provisions and conditions of the an Amended and Restated Shareholder Rights Plan Agreement dated made as of June 1May 4, 2016 and as further amended, supplemented or restated from time to time 2006 (the “"Rights Agreement”") between Trevali Mining CorporationKINROSS GOLD CORPORATION, a corporation incorporated amalgamated under the laws of British Columbia BUSINESS CORPORATIONS ACT (Ontario) (the “"Corporation”"), and Computershare Investor Services Inc., a company incorporated under the laws of Canada, as Rights Agent (the “Rights Agent”, which term shall include any successor Rights Agent under the Rights Agreement), to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “"Common Share”") (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with the a duly completed and executed Form of Election to Exercise duly executed and submitted to at the Rights Agent at its principal office in Vancouver, British Columbia or, with the approval of the Rights Agent, at any other office of the Rights Agent in any of the cities designated from time Cities of Toronto, Montreal, Winnipeg, Calgary or Vancouver, Canada. The Exercise Price shall initially be $90 per Right and shall be subject to time by the Corporation. Until adjustment thereof in certain events as provided in the Rights Agreement, the Exercise Price shall be $ (Canadian) per Right. In certain circumstances described in the Rights Agreement, each Right evidenced hereby may entitle the registered holder thereof to purchase more or less than one Common Share, all as provided in the Rights Agreement. This Rights Certificate is subject to all of the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the RightsRights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request. This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the offices of the Rights Agent or any Co-Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised. Subject to the provisions provision of the Rights Agreement, the Rights evidenced by this Certificate may be, and under certain circumstances are required to be, be redeemed by the Corporation at a redemption price of Cdn.$0.00001 $0.00001 per Right, subject to adjustment in certain events. No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby, but in hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made, made as provided in the Rights Agreement. No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable upon on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meeting meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement. This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent. WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal. Date: TREVALI MINING CORPORATION By: Name: Title: COMPUTERSHARE INVESTOR SERVICES INC. By: Name: Title: TO: (To be attached to each Rights Certificate) FORM OF ELECTION TO EXERCISE The undersigned hereby irrevocably elects to exercise whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of: Name Address Social Insurance, Social Security or other Taxpayer Identification Number Per: Dated Signature (Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever) Signature Guaranteed Signature must be guaranteed by a Schedule 1 Canadian Chartered bank, or by a medallion guarantee by a member of a recognized medallion program, STAMP, SEMP and MSP. (To be completed if true) The undersigned hereby represents, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or an Affiliate or Associate thereof or by any Person acting jointly or in concert with any of the foregoing (all as defined in the Rights Agreement).-------------------------------------------