Common use of Election to Convert Clause in Contracts

Election to Convert. To: HMT Technology Corporation The undersigned owner of $________ in principal of HMT Technology Corporation's 5 3/4% Convertible Subordinated Notes due 2004 (the "Convertible Note") hereby irrevocably exercises the option to convert the Convertible Note, or the portion below designated, into Common Stock of HMT Technology Corporation in accordance with the terms of the Indenture referred to in the Convertible Note, and directs that the shares issuable and deliverable upon conversion, together with any check in payment for fractional shares, be issued in the name of and delivered to the undersigned, unless a different name has been indicated in the assignment below. If shares are to be issued in the name of a person other than the undersigned, the undersigned will pay all transfer taxes payable with respect thereto. Any Noteholder, upon the exercise of its conversion rights in accordance with the terms of the Indenture and the Convertible Note, agrees to be bound by the terms of the Registration Agreement relating to the Common Stock issuable upon conversion of the Convertible Note. Date: Amount of Convertible Note to be converted ($1,000 or integral multiples thereof); $______________________ Signature (for conversion only) ________________________________________ Please Print or Typewrite Name and Address, Including Zip Code, and Social Security or Other Identifying Number (1) Signature must be guaranteed by a commercial bank, trust company or member firm of the New York Stock Exchange.

Election to Convert. To: HMT Technology Coeur d'Alene Mines Corporation The undersigned owner of $________ in principal ix xxxxxxxxx of HMT Technology Coeur d'Alene Mines Corporation's 5 3/49.0% Convertible Senior Subordinated Notes due 2004 Notex xxx Xxxxxary 26, 2007 (the "Convertible Note") hereby irrevocably exercises the option to convert the Convertible Note, or the portion below designated, into Common Stock of HMT Technology Coeur d'Alene Mines Corporation in accordance with the terms of the Indenture referred Indentuxx xxxxxxxx to in the Convertible Note, and directs that the shares issuable and deliverable upon conversion, together with any check in payment for fractional shares, be issued in the name of and delivered to the undersigned, unless a different name has been indicated in the assignment below. If shares are to be issued in the name of a person other than the undersigned, the undersigned will pay all transfer taxes payable with respect thereto. Any Noteholder, upon the exercise of its conversion rights in accordance with the terms of the Indenture and the Convertible Note, agrees to be bound by the terms of the Registration Agreement relating to the Common Stock issuable upon conversion of the Convertible Note. Date: Amount of Convertible Note to be converted ($1,000 or integral multiples thereof); $______________________ $ ------------------------ Signature (for conversion only) ________________________________________ ----------------------------------------- Please Print or Typewrite Name and Address, Including Zip Code, and Social Security or Other Identifying Number (1) : ----------------------------------------- ----------------------------------------- ----------------------------------------- ----------------------------------------- Signature must be guaranteed by a commercial bank, trust company or member firm of the New York Stock Exchange.Guarantee(2)

Election to Convert. To: HMT Technology Coeur d'Alene Mines Corporation The undersigned owner of $________ in principal ix xxxxxxxxx of HMT Technology Coeur d'Alene Mines Corporation's 5 3/49.0% Convertible Senior Subordinated Notes due 2004 dxx Xxxxxxxx 26, 2007 (the "Convertible Note") hereby irrevocably exercises the option to convert the Convertible Note, or the portion below designated, into Common Stock of HMT Technology Coeur d'Alene Mines Corporation in accordance with the terms of the Indenture referred to xxxxxxxx xx in the Convertible Note, and directs that the shares issuable and deliverable upon conversion, together with any check in payment for fractional shares, be issued in the name of and delivered to the undersigned, unless a different name has been indicated in the assignment below. If shares are to be issued in the name of a person other than the undersigned, the undersigned will pay all transfer taxes payable with respect thereto. Any Noteholder, upon the exercise of its conversion rights in accordance with the terms of the Indenture and the Convertible Note, agrees to be bound by the terms of the Registration Agreement relating to the Common Stock issuable upon conversion of the Convertible Note. Date: Amount of Convertible Note to be converted ($1,000 or integral multiples thereof); $______________________________ Signature (for conversion only) ________________________________________ Please Print or Typewrite Name and Address, Including Zip Code, and Social Security or Other Identifying Number (1) Signature must be guaranteed by a commercial bank, trust company or member firm of the New York Stock Exchange.: _______________________________ _______________________________ _______________________________ __________________

Election to Convert. To: HMT Technology Coeur d'Xxxxx Xxxxx Corporation The undersigned owner of $________ in principal of HMT Technology Coeur d'Xxxxx Xxxxx Corporation's 5 3/413 3/8% Convertible Senior Subordinated Notes due 2004 December 31, 2003 (the "Convertible Note") hereby irrevocably exercises the option to convert the Convertible Note, or the portion below designated, into Common Stock of HMT Technology Coeur d'Xxxxx Xxxxx Corporation in accordance with the terms of the Indenture referred to in the Convertible Note, and directs that the shares issuable and deliverable upon conversion, together with any check in payment for fractional shares, be issued in the name of and delivered to the undersigned, unless a different name has been indicated in the assignment below. If shares are to be issued in the name of a person other than the undersigned, the undersigned will pay all transfer taxes payable with respect thereto. Any Noteholder, upon the exercise of its conversion rights in accordance with the terms of the Indenture and the Convertible Note, agrees to be bound by the terms of the Registration Agreement relating to the Common Stock issuable upon conversion of the Convertible Note. Date: Amount of Convertible Note to be converted ($1,000 or integral multiples thereof); $___________________________ Signature (for conversion only) ___Please Print or Typewrite Name and Address, Including Zip Code, and Social Security or Other Identifying Number: _____________________________________ Please Print or Typewrite Name and Address, Including Zip Code, and Social Security or Other Identifying Number (1) _____________________________________ _____________________________________ _____________________________________ Signature must be guaranteed by a commercial bank, trust company or member firm of the New York Stock Exchange.Guarantee(2)