On Site With Randgold Resources Ltd. Chief Executive Officer Mark Bristow As He Visits The Loulo-Gounkoto Gold Mines [Getty Images]

A mine worker displays a large ingot of gold after cleaning and hammering it during the refining process at the production plant for the Loulo-Gounkoto gold mine complex operated by Randgold Resources Ltd. in Loulo, Mali, on Friday, Nov. 1, 2013. Randgold Resources Ltd., a producer of the precious metal in Africa, said there are opportunities to acquire mines on the continent as the biggest companies in the industry scale back operations in the face of lower prices. Photographer: Simon Dawson/Bloomberg via Getty Images

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