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Amoco expanded Cyprus into a diversified worldwide mining company. Amoco spun off Cyprus Minerals Company in 1985. [1] 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]
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The Calumet and Arizona Mining Company organized in March, 1901 and operated several large and profitable mines adjacent to the Copper Queen. By 1907, the C&A was the fourth-most productive copper mine in Arizona, and ran its own smelter in Douglas, Arizona. [5] Phelps Dodge started mining the Lavender open pit in the early 1950s. [4]
This is a list which includes a photographic gallery, of historic structures, some which are listed in the National Register of Historic Places, of significance in Miami, Arizona, a mining town. Miami was founded by Cleve W. Van Dyke in 1907 and is located on the northeastern slope of the Pinal Mountains, between the towns of Superior and Globe ...
The Miami Mineral Belt Railroad (MMBR) served the Miami and Picher lead mining areas in that portion of the Tri-state mining district located in far northeastern Oklahoma.It was closely associated with the St. Louis-San Francisco Railway (Frisco) for its entire history, and was eventually absorbed into the Frisco.
The Pinto Valley Mine is a large copper mine located in Arizona, in the southwestern part of the United States.Pinto Valley represents one of the largest copper reserves in the United States and in the world, having estimated reserves of 446 million tonnes of ore grading 0.25% copper. [1]
This contract expired in 1990 and the resulting increase in electricity prices prompted the owners of the smelter, Cyprus Miami Mining Corporation ("Cyprus"), to seek alternative smelting technologies for lower operating costs. [8] The technologies evaluated included: Contop flame cyclone reactor; Inco flash furnace; ISASMELT; Mitsubishi furnace
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.