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After 154 years of digging at Morenci, all the easily recoverable copper has been mined. Left behind are towering piles of waste rock that hold nearly 10 million tons of the metal seen as critical ...
Freeport bought the Phelps Dodge Mining Corp. in 2007, a time when Phelps Dodge was growing fast, including opening a new open-pit mine near Safford. That year, Phelps Dodge had about 5,000 ...
The mineral is then separated out, smelted into liquid and refined into 99.99% pure copper plates. The vertically integrated mine is the last of its kind in America, which until the 1960s was the ...
After 154 years of digging at Morenci, all the easily recoverable copper has been mined. Left behind are towering piles of waste rock that hold nearly ten-million tons of the metal seen as ...