Rio Tinto plc Eyes a Bigger Argentina Copper Bet as Los Azules Talks Surface
Rio Tinto is considering increasing its 17.2% stake in McEwen Copper’s Los Azules project in Argentina, according to two industry sources. The move follows the collapse of Glencore merger talks and comes as copper demand rises. Rio holds its stake via Nuton LLC, which uses bio-leaching technology. London trading is closed until Monday, leaving investors to react after the weekend.