Exhibit A Joint Filing Agreement
Exhibit A
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 11, 2010.
| XXXXX X. XXXXXX |
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| /s/ Xxxxx X. XxXxx | ||||
(Signature) By: Xxxxx X. XxXxx, Power of Attorney
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| U.S. GLOBAL INVESTORS, INC. |
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| By: | Xxxxx X. XxXxx | |||
| President, General Counsel | ||||
| /s/ Xxxxx X. XxXxx | ||||
(Signature) |
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| U.S. GLOBAL INVESTORS FUNDS |
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| By: | Xxxxx X. XxXxx | |||
| Executive Vice President, Secretary | ||||
| /s/ Xxxxx X. XxXxx | ||||
(Signature) |
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