13D Filing: MacKenzie B. Davis and Kenneth L. Settles’ Sailingstone Capital Partners and Taseko Mines Ltd (TGB)

Joint Filing Agreement Among

SailingStone Capital Partners LLC, SailingStone Holdings LLC,

MacKenzie B. Davis, Kenneth J. Settles Jr. and RS Investment Trust, on behalf of the

RS Global Natural Resources Fund

Whereas, in accordance with Rule 13d-1(k)(1) under the Securities and Exchange Act of 1934 (the “Act”), only one joint Statement and any amendments thereto need to be filed whenever one or more persons are required to file such a statement or any amendments thereto pursuant to Section 13(d) of the Act with respect to the same securities, provided that said persons agree in writing that such Statement or amendments thereto is filed on behalf of each of them:

NOW, THEREFORE, the parties hereto agree as follows:

SailingStone Capital Partners LLC, SailingStone Holdings LLC, MacKenzie B. Davis, Kenneth L. Settles Jr. and the RS Investment Trust, on behalf of RS Global Natural Resources Fund, do hereby agree, in accordance with Rule 13d-1(k)(1) under the Act, to file an Amendment No.1 to the Statement on Schedule 13D relating to their ownership of the Common Stock of the Issuer, and do hereby further agree that said Amendment No. 1 to the Statment on Schedule 13D shall be filed on behalf of each of them.