Coltan from militia-controlled mines in Congo is increasingly flowing into global supply chains for smartphones and computers ...

Coltan is refined into tantalum, which is then used to manufacture smartphones and other electronic devices Kenya has discovered its first deposits of the valuable mineral coltan, the mining ...

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Rwanda-backed M23 rebels on Wednesday seized a disputed town in east Democratic Republic of Congo, in a fresh violation of a ceasefire agreed in August, local sources told AFP.

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Kenya has discovered its first deposits of the valuable mineral coltan, the mining minister has said. The rare mineral is used to manufacture electric car batteries, mobile phones and other ...