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Climax Molybdenum Company (Freeport-McMoRan) Clear Creek: Idaho: Thompson Creek [3] Thompson Creek Metals Co. Inc. Custer: Montana: Continental Pit [3] Montana Resources LLP: Silver Bow: Nevada: Ashdown mine [3] Win-Eldrich Mines Ltd. Humboldt: Robinson [3] Quadra FNX Mining Ltd. White Pine: New Mexico: Chino [3] Freeport-McMoRan: Grant: Questa ...
The second class, which produces molybdenum as a byproduct of copper mining, includes copper porphyry deposits. In 2014, byproduct molybdenum was produced at ten porphyry copper mines, in Arizona, Montana, Nevada, and New Mexico. Byproduct molybdenum from copper mines accounted for 47% of US molybdenum production in 2013.
The mine is located in southern Pima County, southwest of Tucson and west of Green Valley-Sahuarita. Originally developed as an underground mine in 1907, the Sierrita open pit has been in operation since 1959 and is a copper and molybdenum mining complex, operating on a porphyry copper deposit with oxide, secondary sulfide, and primary sulfide ...
Freeport-McMoRan Inc., often called Freeport, is an American mining company based in the Freeport-McMoRan Center, in Phoenix, Arizona.The company is the world's largest producer of molybdenum, a major copper producer and operates the world's largest gold mine, the Grasberg mine in Papua, Indonesia.
Mine County and State Owner Source of copper Annual production (thousand tonnes) 1 Morenci: Greenlee County, Arizona: Freeport-McMoRan (72%), Sumitomo Group (28%) Open pit, copper-molybdenum ore, producing copper cathode, copper and molybdenum concentrates 286 (2021) [2] 2
Resolution Copper has proposed to give the federal government 5,376 acres (21.76 km 2) of environmentally sensitive land in Arizona in exchange for the 2,422-acre (9.80 km 2) oak flat federal parcel, [12] which includes the Oak Flat Campground (protected since 1955) and several outdoor climbing sites including the Mine, Atlantis and the Pond.
Cyprus Amax Minerals was a major US-based mining company formed in 1993 through the merger of AMAX with the Cyprus Minerals Company. It was one of the world's largest producers of Molybdenum and Lithium and a leading producer of copper and coal. It also produced iron ore and gold. It was acquired by the Phelps Dodge Corporation in 1999.
Freeport-McMoRan (which acquired Phelps Dodge in 2007) now operates the copper/molybdenum mine. This copper mine does open pit mining and runs on an around-the-clock schedule. The copper concentrate is either trucked to southern Arizona, or taken by semi to 20 miles outside of town to the BNSF Railway's Phoenix Subdivision in Hillside ...