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 ...

Soon, I saw what has drawn so many to Clifton over the last 150 years: one of the world's largest open-pit copper mines. The Morenci mine ... When you picture an Old West town, Clifton is it.

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 ...