Congo is the world’s largest cobalt producer and was the tenth-largest exporter of copper last year, according to CRU Group, a London-based research company. Photographer: Naashon Zalk/Bloomberg News
Congo is the world’s largest cobalt producer and was the tenth-largest exporter of copper last year, according to CRU Group, a London-based research company. Photographer: Naashon Zalk/Bloomberg News
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