Du Plessis to step down as Rio chair to join BT Group

Diversified major Rio Tinto has confirmed that chairperson Jan du Plessis will retire after the completion of an "orderly succession process". British multinational group BT Group announced earlier on Thursday that Du Plessis would join its board as nonexecutive director on June 1, and as chairperson on November 1. He will succeed outgoing BT Group chairperson Sir Mike Rake.