Rio said Nuton technologies have the potential to economically unlock low-grade sulphide resources, copper bearing waste and tailings, and achieve higher copper recoveries.
Both Anglo American and Antofagasta have reported drops in production due to water availability issues exacerbated by a historic drought that's affected the country for more than a decade.
Miner renewed its nickel hedging program in 2022 to protect against huge price swings, but ended up losing out on $75 million in potential gains from the metal’s unprecedented rally.