SYDNEY—Rio Tinto PLC said Chairman Jan du Plessis plans to step down in the coming year, ending a run of more than eight years at the world’s No. 2 mining company, which is facing scrutiny from authorities over some of its former African operations. He joins a growing list of departures from the top ranks of global miners as the industry emerges from a multiyear downturn. BHP Billiton Ltd. Chairman Jac Nasser and Anglo American PLC...

Source: Wall Street Journal March 09, 2017 08:26 UTC