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Calumet and Hecla Mine shaft No. 2, c. 1906. The Calumet and Hecla Mining Company was a major copper-mining company based within Michigan's Copper Country.In the 19th century, the company paid out more than $72 million in shareholder dividends, more than any other mining company in the United States during that period.
Together with Ximen Tungsten Co Ltd, it founded a joint venture, Luoyang Yulu Mining Co. Ltd. to process the ore. [15] [16] In August 2006, the company began planning an initial public offering, and, in preparation for the move, changed its name to China Molybdenum in 2007. [17] [18] [19] The company is listed on the Hong Kong Stock Exchange. [20]
McDowell founded McDowell Brothers and Company in New York City, an investment firm specializing in silver mining, railroads, and land speculation. [2] He reorganized the Montclair Railroad of New Jersey, the New York, Ontario and Western Railway of New Jersey, and the Midland Railroad of New Jersey, and consolidated many others.
The former Cleveland Iron Mining Co. was a survivor of this shakeout, purchasing many of its competitors. One key merger in 1890, with Jeptha Wade's Cliffs Iron Company led the combined firm to change its name to the Cleveland-Cliffs Iron Company. [8] The company invested substantially to improve the logistics of iron-ore transport.
The mine was sold in 1993 to Thompson Creek Metals Company (USA), which began mining at the site in April 1994. The company has claims on over 22,000 acres of land (includes waste dumps). It operates as an open pit mine, [ 6 ] and includes Bruno Creek Tailings Impoundment , the second tallest center-line tailings dam in the world. [ 10 ]
SSR Mining Inc., formerly Silver Standard Resources is a Denver-based gold, silver, copper, lead and zinc producer that owns the largest silver mine in Argentina. [1] In addition it engages in exploration activity throughout the Americas (5 countries) and Turkey.
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 mine would create a much-needed economic boost to the region, directly employing 400 people for at least 19 years and support 1,700 indirect jobs. [72] Historically, mining jobs are among the highest paying positions in Arizona, and experienced workers in the copper industry in the southwest can earn an average of $59,000 or more per year. [73]