The Morenci Mine is one of the largest copper mines in the United States, located in Greenlee County, Arizona. It is an open-pit mine that has been in operation since the late 1800s and is known for its significant copper production. The mine is owned by Freeport-McMoRan, a major player in the global mining industry. The Morenci Mine covers approximately 20,000 acres and employs advanced mining techniques to extract copper ore. The ore is processed on-site to produce copper concentrate, which is then transported for further refining. The mine plays a crucial role in the local economy and contributes to the supply of copper used in various industries.