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Mr. Diederik Duvenage is a South African mining consultant with 28 years of mining experience in Latin America and Africa. Mr. Duvenage has broad technical and project management background in both open pit and open cast mines. Mr. Duvenage has held senior and executive management positions with both public and private companies including Volcan Companía, Anglo Coal, Anglo Platinum, MineraTahoe Resources (Shahuindo Mine and Escobal Mina San Rafael), Stracon, ApogeeSilver, Ancash Mines and Golden Star Resources.