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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 mineralization.
The Sierrita Mountains (English: "Little Mountains") is a minor mountain range about 40 mi (60 km) southwest of Tucson, in Pima County, Arizona. Historically, the area has seen extensive mining and ranching activity: several ranches, abandoned mines, and the large Sierrita Mine are located in the area. The highest point in the mountains is ...
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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AUBURN — A 15-year-old boy was rescued from a Northern California mine shaft, officials said Monday. It happened in the Placer County city of Auburn near China Bar in the Auburn State Recreation ...
COPENHAGEN (Reuters) -Greenland Prime Minister Mute Egede said on Monday the country is looking to strengthen its defence and mining ties with the United States, albeit on its own terms, following ...
A view of flames and giant smoke over the sky as a fire erupted at Moss Landing Power Plant on Thursday that located on Pacific Coast Highway in Moss Landing of Monterey Bay, CA, Jan. 17, 2025.
Lundin Mining: 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 ...