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Copperwood mine plan proceeds near Lake Superior, Porcupine Mountains

Posted on October 7, 2026
By Detroit Free Press
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1 min read

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Copperwood mine plan proceeds near Lake Superior, Porcupine Mountains

Canadian mining company Highland Copper proposes to mine up to 6,600 metric tons of copper ore per day, 2 miles from Lake Superior and at the western edge of Porcupine Mountain State Park.