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Ars Technica
Jul 20, 2018, 6:00 am425 ptsEnlarge / A creuseur, or digger, descends into a copper and cobalt mine in Kawama, Democratic Republic of Congo on June 8, 2016. Cobalt is used in the batteries for electric cars and mobile phones. Working conditions are dangerous, often with no safety equipment or structural support for the tunnels. The…
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