History of Morenci ArizonaFreeport-McMoRan’s Morenci Operations started in 1872, when the first commercial mining operations were developed. The initial underground mining began in 1881 and the mine later transitioned to open-pit mining beginning in 1937. In 1987 Morenci commissioned its first solution extraction/electrowinning plant and continued as a pioneer for mining technology. Today Morenci is one of North America’s largest producers of copper and one of the largest open-pit mines in the world with great potential for growth and continued prosperity.

In 2015, copper production at Morenci* amounted to 902 million pounds and as of December 31, 2015, over 3,200 people were employed here.

* Amounts are net of Morenci’s 15 percent joint venture partner’s interest.