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The open pit mine at the Oyu Tolgoi copper-gold mine, jointly owned by Rio Tinto Group's Turquoise Hill Resources Ltd. unit and state-owned Erdenes Oyu Tolgoi LLC, in Khanbogd, the South Gobi desert, Mongolia, on Tuesday, March 14, 2023. Rio has begun digging copper from the underground portion of its giant mine in Mongolia, an expansion that will turn the operation into one of the world's largest, after years of delays, cost blow-outs and billion-dollar disputes with the country's government. (Photo by SeongJoon Cho/Bloomberg)
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