The PolyMet and Teck American joint venture recently launched an $18 million project in Hoyt Lakes, beginning the transformation of an old taconite plant into a copper-nickel operation. NewRange ...

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SUPERIOR NATIONAL FOREST — When the Biden administration barred new mining activity on 225,000 acres of federal land in the Rainy River Watershed, the decision was aimed at protecting the Boundary ...

EPA’s regulations set first-ever mercury emissions limits on the mills that process low-grade iron ore known as taconite. A federal appellate court has rebuffed two steelmakers’ bids to freeze ...

Cliffs Natural Resources officials said Wednesday the company has been testing new, direct-reduced iron taconite pellets at two of its Minnesota plants -- Northshore Mining in Silver Bay and United ...