Endeavour Silver Corp. (Endeavour) is engaged in the evaluation, acquisition, exploration, development and exploitation of silver mining properties in Mexico and in exploration in Chile. The Company operates in two mining segments: Guanacevi and Guanajuato. Endeavour holds 100% interests in 2,538 hectares (6,273 acres) within the silver district of Guanajuato. During the year ended December 31, 2011, the Company drilled 32,000 meters in 115 holes at Guanajuato, mainly in the Bolanitos mine area. Endeavour holds 100% interests in 4,076 hectares (10,071 acres) within the historic silver district of Guanacevi. During 2011, Endeavour drilled 16,000 meters in 56 holes at Guanacevi, mainly in the San Pedro area. During 2011, Endeavour drilled 7,700 meters in 36 holes at San Sebastian. It holds 100% interests in 32.7 hectares (80.8 acres) within the silver district of Parral.