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Sierra Metals appoints Wunder

Toronto-headquartered Sierra Metals has made Matthew Wunder vice president exploration, effective July 1, replacing Thomas Robyn who retired after 11 years in the role.

Wunder is a professional geologist with over 25 years’ of international experience in mineral exploration, having worked with Rubicon Minerals from June 2007 until Dec 2013 and Noranda, Antamina and