Great Panther updates mineral resource estimates at the Guanajuato Mine Complex and San Ignacio Project; Extends mineralization at San Ignacio

 VANCOUVER, BRITISH COLUMBIA, May 09, 2012 (MARKETWIRE via COMTEX) -- GREAT PANTHER SILVER LIMITED CA:GPR +1.03% GPL +0.41% ("the Company") announces the completion of the updated mineral resource estimates at the Company's wholly-owned Guanajuato Mine Complex ("Guanajuato Mine") and San Ignacio Project ("San Ignacio") in...