Exhibit A

Joint Filing Agreement

We, the undersigned, hereby express our agreement that the attached Schedule 13G, and any amendments thereto, is filed jointly on behalf of each of us pursuant to Rule 13d-1(k) of the Exchange Act.

Dated as of: February 14, 2011.

FRANK E. HOLMES
/s/ Frank E. Holmes
(Signature) By: Susan B. McGee, Power of Attorney
U.S. GLOBAL INVESTORS, INC.
By:	Susan B. McGee
	President, General Counsel
/s/ Susan B. McGee
(Signature)
U.S. GLOBAL INVESTORS FUNDS
By:	Susan B. McGee
	Executive Vice President, Secretary
/s/ Susan B. McGee
(Signature)