Codelco to keep "Chuqui" open pit going for an extra year

At more than 1,100 metres deep, Chuquicamata is still the world’s largest open-pit copper mine. (Image courtesy of Codelco.) Chile’s Codelco, the world’s largest copper producer, has extended mining at its century-old open pit Chuquicamata mine for an extra year...

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