ASSESSMENTS
Bringing Central Africa's Minerals to Port
Oct 29, 2013 | 10:47 GMT

Congolese workers stand beside bags of a mixture of cobalt and copper at the STL (Société pour le traitement du terril de Lubumbashi) processing plant during a maintenance day on December 1, 2011.
(Photo credit should read PHIL MOORE/AFP/Getty Images)
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