Sasol is planning to sell its South African coal-mining business, according to people familiar with the matter. The company will begin a formal sales process in the coming weeks, said the people, who asked not to be identified as the information isn’t public yet. The mining business had turnover of R20-billion in the 2018 financial year, according to the company’s financial report, mostly from internal sales to Sasol’s other operations. The company is the world’s biggest manufacturer of fuel from coal, an energy-intensive process. Sasol’s coal mines produce about 40 million tons of coal a year, almost entirely for use in its own operations, according to its website.