Companies are increasingly turning to renewable technologies - but acquiring the materials needed to facilitate green technology is not so ethically sound. Cobalt is a metal essential for producing batteries for electric cars and devices, with 70% coming from The Democratic Republic of Congo. But the cobalt trade is rife with corruption and negligence. 'People are dying through a lack of safety. If a worker dies, they bury the person, hiding the corpse', says an employee of one major Chinese company which operates an industrial cobalt mine. 'I was at church and they called me and said "Your child went to the mine and now is dead"', says Mama Nicole, who works in a DRC cobalt mine. Her son had been collecting cobalt around the edge of the mine - where reportedly, no fences were in place - when the mine collapsed. He was buried alive. Despite the Cobalt boom, the city of Kolwezi - which rests on the DRC's richest cobalt reserves - continues to have high infant morality rates and no running water. 'As Congolese, we are not benefiting from what the Chinese are mining', says a mine worker.