Mining major BHP Billiton recently made an exit from the titanium minerals industry, as it sold its 37 percent stake in Richard Bay Minerals – a titanium operation in South Africa, to mining giant Rio Tinto. The deal is yet to reach completion.

BHP Billiton in 2011 had announced its plans to review its diamond mining segment. It sold its stake in the Ekati Mines to Peregrine Diamonds.