Rio Tinto ups stake in Australia's second-biggest aluminium smelter

Commodities giant Rio Tinto will increase its interest Boyne Smelters (BSL), which owns and operates the Boyne Island aluminium smelter in Gladstone, Australia, to 73.5%. The company has agreed to acquire Mitsubishi’s 11.65% interest in BSL. This follows the recent agreement to acquire Sumitomo Chemical Company’s 2.46% interest in BSL.