Exhibit 99.1
JOINT FILING AGREEMENT
The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to such statement shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. This agreement may be included as an exhibit to such joint filing.
Dated: August 3, 2010.
RCA IV GP L.L.C.
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
RESOURCE CAPITAL ASSOCIATES IV L.P.
By: RCA IV GP L.L.C., General Partner
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
RESOURCE CAPITAL FUND IV L.P.
By: Resource Capital Associates IV L.P., General Partner
By: RCA IV GP L.L.C., General Partner
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
RCA V GP LTD.
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
RESOURCE CAPITAL ASSOCIATES V L.P.
By: RCA IV GP LTD., General Partner
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
RESOURCE CAPITAL FUND V L.P.
By: Resource Capital Associates V L.P., General Partner
By: RCA V GP Ltd., General Partner
By: /s/ Sherri A. Croasdale
Name: Sherri A. Croasdale
Title: Vice President and Chief Financial Officer
