Polymet Mining Company/Glencore mine in Hoyt Lakes

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Polymet Mining/Glencore copper mine in Hoyt Lakes Minnesota.
Polymet Mining/Glencore copper mine in Hoyt Lakes Minnesota.
Photo taken in August 2015. © 2026 Chad Davis
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Copper MineErie BasinGlencoreHoyt LakesLTVLTV MineLTV SteelMiningMinnesotaNational ForestPolymet Mining CompanySuperior National Forest
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