Five of the nation’s biggest copper mines are in Arizona, all run by Freeport-McMoRan. The Morenci open-pit complex in Greenlee County – continuously operated since 1939 – is the largest in ...

The biggest employer in Morenci and the owner of the town is Freeport-McMoRan, the owner of the Morenci Mine, the largest copper mining operation in North America, and one of the largest copper mines ...

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A planned copper mine could alter Tucson's natural skyline, but in the 'Copper State,' mining interests still hold sway.

With pits like Phoenix-based Freeport McMoran’s Morenci Mine in eastern ... told The Republic that copper mining is synonymous with southern Arizona. The mine, at least in its first planned ...

Clifton mayor Laura Dorrell and Robert Pollock speak about the Morenci Mine, its impact and the value of copper. New ASU graduates celebrate at the winter commencement in Tempe Watch The Republic ...

The Sajjan Jindal-led JSW Group has added copper to its metals business, marking its entry into the non-ferrous metals industry and opening up doors to a vast range of consumer applications ...