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Copper Range spun off its wholly owned subsidiary White Pine Copper Co., which in 1955 opened the White Pine mine at the south end of the copper belt, at White Pine, Michigan, Ontonagon County. The White Pine mine contained a large stratiform body of chalcocite-impregnated siltstone and shale of the Precambrian Nonesuch Shale Formation.
Copper ore, concentrated and leached 56 (2018) [5] 9 Robinson: White Pine County, Nevada: KGHM Polska Miedź: Copper-gold-molybdenum ore, open pit, concentrate products 51 (2018) [6] 10 Mission Complex: Pima County, Arizona: Grupo México: Copper-molybdenum ore, concentrated
Since 2005, production has averaged about 125 million pounds of copper per year. [10] In 2010, Robinson produced 109 million pounds of copper and 73,000 ounces of gold. [11] In 2012, Quadra was acquired by KGHM Polska Miedź, a large Polish copper producer. [12] As of December 2017, the Robinson Mine had 605 employees. [13] [2]
In 2008, a fire at a Spruce Pine quartz refinery “temporarily brought production to a halt and impacted the market,” reported Global Risk Intel, a Washington D.C.-based consulting firm.
White Pine is located within Carp Lake Township east of the Porcupine Mountains Wilderness State Park. The Copper Range Company operated the White Pine mine in White Pine from 1955 to 1995. [4] White Pine is served by the 49971 ZIP Code, which is the highest numeric ZIP Code in the state of Michigan. [8]
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Southern Copper, one of Peru's largest copper producers, said on Thursday it has started legal actions to oust "illegal miners" that are occupying and slowing development of one of its key projects.
Spectacular specimen of elongated, spinel-twinned copper crystals from the old White Pine mine. The copper-bearing Nonesuch Shale at the south end of the Copper Country in Ontonagon County had been known since the 1800s. But the ore grades were too low, the ore mineral particles too small, and the copper was largely in sulfides instead of ...