Electricity power lines stand on the horizon beyond the Optimum Colliery, owned by Glencore Plc, which supplies coal to the nearby Hendrina power station, operated by Eskom Holdings SOC Ltd., in Middelburg, South Africa, on Wednesday, April 13, 2016. Creditors of Glencore's Optimum Coal mine approved a plan to sell it to a company controlled by South African President Jacob Zuma's son and the Gupta family on Friday, according to an administrator of the business-rescue team. Photographer: Waldo Swiegers/Bloomberg via Getty Images