Alfredo Carlos Plenge Thorne

Alfredo Carlos Plenge Thorne is currently a Director at C.H.
Plenge & Cia and an Independent Director at Silver Mountain Resources, Inc. He previously worked as the Deputy Chief Executive Officer at Castrovirreyna Compañía Minera SA, the Chief Executive Officer at Corporación Minera Castrovirreyna SA, the Vice Chairman at Sociedad Nacional de Minería, Petróleo y Energía, and the CFO & Manager-Minerals Marketing at Sociedad Minera el Brocal SA. Mr. Plenge Thorne holds an MBA from McGill University, an undergraduate degree from the University of Utah, and a graduate degree from the Colorado School of Mines.