MINNEAPOLIS (AP) — The U.S. Army Corps of Engineers said Tuesday it has revoked a crucial federal permit for the proposed NewRange Copper Nickel mine in northeastern Minnesota, a project ...

On Tuesday, those strict water pollution limits were at the heart of a decision by the U.S. Army Corps of Engineers to revoke a crucial permit ... now halted two mines in Minnesota despite pushing ...

A decision on whether to reissue a permit to mine for the company vying to open Minnesota’s first copper ... Last year, the U.S. Army Corps of Engineers revoked the project’s federal discharge ...

(AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced ... And the Army Corps of Engineers revoked a wetlands permit, saying it did not comply ...

Two moves this week — one by Congress, one by the Trump administration — seek to help pave the way forward for two controversial mining projects in northeast Minnesota: Twin Metals outside Ely ...