Rio Tinto begins underground copper production at Oyu Tolgoi
Rio Tinto noted that Oyu Tolgoi is expected to become the fourth-largest copper mine in the world by 2030, operating in the first quartile of the copper equivalent cost curve. Ore is currently being processed from Panel Zero in Hugo North Lift 1 and production will ramp up over the coming years. "Developing the underground mine is an investment ...