Rio may push for Oyu Tolgoi stake, Ivanhoe says

Global miner Rio Tinto may push for a change in ownership of the massive Oyu Tolgoi copper and gold mine in Mongolia, which is two-thirds owned by Canada's Ivanhoe Mines, the Canadian miner said in a US filing. Ivanhoe said the Anglo-Australian miner also plans to replace some Ivanhoe senior managers and increase its representation on the board. Rio increased its stake in the Canadian miner to 51% earlier this week.

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