Credit: AntofagastaChilean copper mining group Antofagasta has signed a power supply agreement with utilities company Colbún to provide 100% renewable power to its Zaldivar mine. The open-pit, heap-leach copper oxide mine, located in Northern Chile, is a 50% joint venture between Antofagasta and Barrick Gold. The 10-year agreement between Antofagasta and Colbún will power the mine through a mixture of hydro, solar and wind power, with Antofagasta estimating that the switch to renewable energy will reduce the mines emission of greenhouse gases by approximately 350,000 tonnes per year. Read the full story HERE.