Freeport-McMoRan Copper & Gold Inc. (FCX) is a leading international mining company with headquarters in Phoenix, Arizona. FCX operates large, long-lived, geographically diverse assets with significant proven and probable reserves of copper, gold and molybdenum. FCX is the worldâs largest publicly traded copper producer and has a dynamic portfolio of operating, expansion and growth projects in the copper industry. FCX is also the worldâs largest producer of molybdenum and a significant gold producer.