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Refining at the mines as well as at a copper refinery in Amarillo, Texas, produce 375,000,000 pounds (170,000,000 kg) of refined copper each year. ASARCO's hourly workers are primarily represented by the United Steelworkers. ASARCO has 20 superfund sites across the United States, and it is subject to considerable litigation over pollution.
This list of bullion dealers includes notable companies and organizations that deal in precious metals, such as gold and silver. This list is incomplete ; you can help by adding missing items . ( September 2014 )
Arizona's copper production was 60% of the total for the United States. Copper mining also produces gold and silver as byproducts. [2] Byproduct molybdenum from copper mining makes Arizona the nation's second-largest producer of that metal. Although copper mineralization was found by the earliest Spanish explorers of Arizona, the territory was ...
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.
Silver ore was first discovered in west-central Arizona in 1583 by Spanish explorer Antonio de Espejo, but no mining resulted.Again in 1598, Juan de Oñate led another expedition searching for Espejo’s silver; many claims were staked, but the expeditioners returned to Santa Fe without mining any silver, and the deposits remained unexploited.
Uranium mining companies of the United States (1 C, 3 P) Pages in category "Mining companies of the United States" The following 57 pages are in this category, out of 57 total.
Engelhard Corporation was an American Fortune 500 company headquartered in Iselin, New Jersey, United States. It is credited with developing the first production catalytic converter . In 2006, the German chemical manufacturer BASF bought Engelhard for US$5 billion.
C. S. Fly's image of miner George Warren first appeared in Souvenir of Bisbee published in 1900. Fly's caption was, "Discoverer of the Copper Queen Mine." The presence of copper ore in the Mule Mountains of southeast Arizona may have been known as early as 1876, but the first mining claim was filed on August 2, 1877. [4]
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