First copper-nickel mine in Minnesota inches forward
The company behind Minnesota's first copper-nickel mine is putting its shoulder to the wheel of a project that has been over a decade in the making. On Friday Polymet Mining announced it has applied for a permit to mine copper, nickel and precious metals at a site in northern Minnesota known as The Duluth Complex — a rich vein of minerals stretching from about 150 miles north of Duluth to the Canadian border.
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