Gold Resource produces metal concentrates that contain gold, silver, copper, lead and zinc, and dore containing gold and silver from the Aguila and Alta Gracia Projects in the southern state of Oaxaca, Mexico. The Aguila Project includes the Arista underground mine and processing facility. The Alta Gracia project includes the Mirador underground mine. Co. also performs exploration and evaluation work of precious metal properties in Nevada. Co.'s operations in Oaxaca, Mexico are conducted through its subsidiary, Don David Gold Mexico S.A.de C.V. Co.'s Nevada exploration, development and construction work is performed through two subsidiaries, GRC Nevada Inc. and Walker Lane Minerals Corp.