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Kennecott operates the Bingham Canyon Mine, one of the largest open-pit copper mines in the world in Bingham Canyon, Salt Lake County, Utah. The company was first formed in 1898 as the Boston Consolidated Mining Company. The current corporation was formed in 1989. The mine and associated smelter produce 1% of the world's copper. [1]
The Mineral Park mine is a large open-pit copper mine located in the Cerbat Mountains, 14 mi (23 km) northwest of Kingman, Arizona (in the southwestern United States). A 2013 report said that Mineral Park has an estimated reserves of 389 million t (383 million long tons; 429 million short tons) of ore grading 0.14% copper and 31 million oz (1.9 ...
The Morenci Mine is a large copper mine located near Morenci, Arizona, United States. Morenci represents one of the largest copper reserves in the United States and in the world, having estimated reserves of 3.2 billion tonnes (3.5 × 10 9 short tons) of ore grading 0.16% copper.
Underground mine producing nickel and copper concentrates 18 (2018) [8] 15 Phoenix Lander County, Nevada: Newmont Mining Corporation: Gold-copper ore, concentrated and leached 16 (2018) [6] 16 Lisbon Valley San Juan County, Utah: Lisbon Valley Mining Company Copper ore, open pit, heap leached 10–15 (2018) [9] 17 Miami: Gila County, Arizona ...
The Martin Mine (Gold, copper, lead), produced about 28,000 ounces of gold from two veins between 1911 and 1920, at an average grade of 1 ounce per ton. The Gold Cord Mine (Gold, copper, lead, zinc, tungsten), produced about 16,000 ounces of gold, mainly between 1931 and 1938, from veins with grades ranging for 0.1 to 9 ounces per ton.
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.
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The workings include a large open pit mine 2.4 kilometres (1.5 mi) wide at the surface completed in 2019, three operating underground mines (Grasberg Block Cave, Deep Mill Level Zone and Big Gossan) and four concentrators. The mine is a high-volume, low-cost underground mining operation, producing and milling more than 72 million tonnes of ore ...