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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 .
The rich Inspiration copper mine opened in 1911. It was promoted by Boyce Thompson, who owned the nearby Magma Mine in Superior, Arizona. He retained a 15% interest in the Inspiration Consolidated Copper Company when that was founded in 1915. The mine is currently operated by Freeport-McMoran, which renamed it the Miami Mine.
Freeport-McMoRan: Copper ore, leached 110 5 Bagdad: Yavapai: Freeport-McMoRan: Copper-molybdenum ore, concentrated and leached 100 6 Miami: Gila: Freeport-McMoRan: Copper ore, leached 90 7 Sierrita: Pima: Freeport-McMoRan: Copper-molybdenum ore, concentrated and leached 80 8 Pinto Valley: Gila: Capstone Mining Copper-molybdenum ore ...
The Miami mine is owned and operated by Freeport-McMoRan. Mining began in 1911 as the Inspiration mine, and the nation's first froth flotation copper concentrator to process sulfide minerals was built and began production in 1915. Inspiration was among the first to employ vat leaching in 1926 and precipitation plants to recover oxide minerals.
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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 ...
In 1986, Cyprus acquired the Sierrita copper and molybdenum mine near Tucson, Arizona. In July 1988, Cyprus Minerals bought the Inspiration mine and smelting complex in Miami, Arizona . [ 2 ] With the expiry of an agreement to purchase electricity at a favorable rate from the Salt River Project , Cyprus Minerals installed an ISASMELT furnace in ...
This will rise to 160,000 daily tonnes of ore for 2021 and 200,000 tonnes for 2022, as the firm completes its transition to underground mining, he said. Freeport Indonesia to shift to all ...