Part of Tilwizembe, a former industrial copper-cobalt mine now occupied by artisanal miners, is seen outside Kolwezi, the capital city of Lualaba Province in the south of Democratic Republic of Congo, June 11, 2016.
Credit: Reuters/Aaron Ross
Blockchain is to be used for the first time to try to track cobalt's journey from artisanal mines in Democratic Republic of Congo through to products used in smartphones and electric cars.
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