Exhibit A Joint Filing AgreementJoint Filing Agreement • February 12th, 2010 • U S Global Investors Inc • Investment advice
Contract Type FiledFebruary 12th, 2010 Company IndustryWe, 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.