AGREEMENT CONCERNING JOINT FILING OF SCHEDULE 13D

EXHIBIT 8

CUSIP No.  00000X000

AGREEMENT CONCERNING JOINT FILING

OF SCHEDULE 13D

The undersigned agree as follows:

(i) each of them is individually eligible to use the Schedule 13D/A to which this Exhibit is attached, and such Schedule 13D/A is filed on behalf of each of them; and

(ii) each of them is responsible for the timely filing of such Schedule 13D/A and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other person making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same instrument.

Dated:  September 9, 2016

1

	V. XXXX XXXXX
	/s/ V. Xxxx Xxxxx
	1109519 ONTARIO LIMITED
	By:		/s/ V. Xxxx Xxxxx
		Name:	V. Xxxx Xxxxx
		Title:	President
	THE SIXTY TWO INVESTMENT COMPANY LIMITED
	By:		/s/ V. Xxxx Xxxxx
		Name:	V. Xxxx Xxxxx
		Title:	President
	810679 ONTARIO LIMITED
	By:		/s/ V. Xxxx Xxxxx
		Name:	V. Xxxx Xxxxx
		Title:	President

	FAIRFAX FINANCIAL HOLDINGS LIMITED
	By:		/s/ Xxxx Xxxxxx
		Name:	Xxxx Xxxxxx
		Title:	President
	FFHL GROUP LTD.
	By:		/s/ Xxxx Xxxxxx
		Name:	Xxxx Xxxxxx
		Title:	Director

	ADVENT CAPITAL (HOLDINGS) LTD.
	By:		/s/ Xxxx Xxxxxxx Xxxxx
		Name:	Xxxx Xxxxxxx Xxxxx
		Title:	Company Secretary
	ADVENT CAPITAL (NO. 3) LIMITED
	By:		/s/ Xxxx Xxxxxxx Xxxxx
		Name:	Xxxx Xxxxxxx Xxxxx
		Title:	Company Secretary

	CRC REINSURANCE LIMITED
	By:		/s/ Xxxxxx Schokking
		Name:	Xxxxxx Schokking
		Title:	Chairman

	FAIRFAX (US) INC.
	By:		/s/ Xxxxxxx X. Xxxxxxxx
		Name:	Xxxxxxx X. Xxxxxxxx
		Title:	Vice President, Treasurer, Secretary and Director
	TIG HOLDINGS, INC.
	By:		/s/ Xxxxxxx X. Xxxxxxxx
		Name:	Xxxxxxx X. Xxxxxxxx
		Title:	Chairman, President, Secretary and Director

	ZENITH NATIONAL INSURANCE CORP.
	By:		/s/ Xxxxxxx Xxxxxx
		Name:	Xxxxxxx Xxxxxx
		Title:	Executive Vice President, General Counsel and Director
	ZENITH INSURANCE COMPANY
	By:		/s/ Xxxxxxx Xxxxxx
		Name:	Xxxxxxx Xxxxxx
		Title:	Executive Vice President, General Counsel and Director

	TIG INSURANCE COMPANY
	By:		/s/ Xxxxxxxx X. Xxxxxxx
		Name:	Xxxxxxxx X. Xxxxxxx
		Title:	Chairman, President, Chief Executive Officer and Director
	RIVERSTONE HOLDINGS LIMITED
	By:		/s/ Xxxxxxxx X. Xxxxxxx
		Name:	Xxxxxxxx X. Xxxxxxx
		Title:	Managing Director
	CLEARWATER INSURANCE COMPANY
	By:		/s/ Xxxxxxxx X. Xxxxxxx
		Name:	Xxxxxxxx X. Xxxxxxx
		Title:	Chairman, President, Chief Executive Officer and Director
	RIVERSTONE INSURANCE LIMITED
	By:		/s/ Xxxxxxxx X. Xxxxxxx
		Name:	Xxxxxxxx X. Xxxxxxx
		Title:	Director

	ODYSSEY US HOLDINGS INC.
	By:		/s/ Xxx Xxxxxxxxxxxx
		Name:	Xxx Xxxxxxxxxxxx
		Title:	Executive Vice President
	ODYSSEY RE HOLDINGS CORP.
	By:		/s/ Xxx Xxxxxxxxxxxx
		Name:	Xxx Xxxxxxxxxxxx
		Title:	Executive Vice President

	ODYSSEY REINSURANCE COMPANY
	By:		/s/ Xxxx X. Xxxxxxx
		Name:	Xxxx X. Xxxxxxx
		Title:	Vice President
	XXXXXX INSURANCE COMPANY
	By:		/s/ Xxxx X. Xxxxxxx
		Name:	Xxxx X. Xxxxxxx
		Title:	Vice President
	CLEARWATER SELECT INSURANCE COMPANY
	By:		/s/ Xxxx X. Xxxxxxx
		Name:	Xxxx X. Xxxxxxx
		Title:	Vice President

	NEWLINE HOLDINGS UK LIMITED
	By:		/s/ Xxxxxx X. Xxxxxxx
		Name:	Xxxxxx X. Xxxxxxx
		Title:	Director
	NEWLINE INSURANCE COMPANY LIMITED
	By:		/s/ Xxxxxx X. Xxxxxxx
		Name:	Xxxxxx X. Xxxxxxx
		Title:	Director
	NEWLINE CORPORATE NAME LIMITED
	By:		/s/ Xxxxxx X. Xxxxxxx
		Name:	Xxxxxx X. Xxxxxxx
		Title:	Director

	XXXX & XXXXXXX HOLDINGS CORP.
	By:		/s/ Xxxx X. Xxxxxxxxx
		Name:	Xxxx X. Xxxxxxxxx
		Title:	Senior Vice President, Chief Financial Officer, Treasurer and Director
	UNITED STATES FIRE INSURANCE COMPANY
	By:		/s/ Xxxx X. Xxxxxxxxx
		Name:	Xxxx X. Xxxxxxxxx
		Title:	Senior Vice President, Chief Financial Officer and Director
	THE NORTH RIVER INSURANCE COMPANY
	By:		/s/ Xxxx X. Xxxxxxxxx
		Name:	Xxxx X. Xxxxxxxxx
		Title:	Senior Vice President, Chief Financial Officer and Director

	NORTHBRIDGE FINANCIAL CORPORATION
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer
	FEDERATED INSURANCE COMPANY OF CANADA
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer and Director

	NORTHBRIDGE COMMERCIAL INSURANCE CORPORATION
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer and Director
	NORTHBRIDGE GENERAL INSURANCE CORPORATION
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer and Director
	NORTHBRIDGE PERSONAL INSURANCE CORPORATION
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer and Director

	ZENITH INSURANCE COMPANY, A CANADIAN ENTITY
	By:		/s/ Xxxxx Xxxxxxx
		Name:	Xxxxx Xxxxxxx
		Title:	Chief Financial Officer and Director

	BRIT LIMITED
	By:		/s/ Xxxx Xxxxx
		Name:	Xxxx Xxxxx
		Title:	Chief Financial Officer and Director
	BRIT INSURANCE HOLDINGS LIMITED
	By:		/s/ Xxxx Xxxxx
		Name:	Xxxx Xxxxx
		Title:	Chief Financial Officer and Director
	BRIT UW LIMITED
	By:		/s/ Xxxx Xxxxx
		Name:	Xxxx Xxxxx
		Title:	Chief Financial Officer and Director

	BRIT INSURANCE (GIBRALTAR) PCC LIMITED, IN RESPECT OF ITS PROTECTED CELL, CELL RE
	By:		/s/ Xxxx Xxxxx
		Name:	Xxxx Xxxxx
		Title:	Director
	BRIT SYNDICATES LIMITED
	By:		/s/ Xxxx Xxxxx
		Name:	Xxxx Xxxxx
		Title:	Chief Financial Officer and Director