Associated Press Minnesota nickel-mine permit revoked by Army Corps over downstream water threat The permit did not ensure compliance with water-quality requirements of the Fond du Lac Band of ...

The Corps sided with the Fond du Lac Band and the EPA, concluding that a wetlands permit for the open-pit mine may not prevent mercury pollution and other contamination from violating the Band’s ...

Its water discharge permit was sent back to the Minnesota Pollution Control Agency for more review. The overall permit to mine got sent back to the state Department of Natural Resources because of ...

A decision on whether to reissue a permit to mine for the company vying to open Minnesota’s first copper-nickel mine is on hold after the company behind it said it is studying potential changes ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

FILE - A former iron ore processing plant near Hoyt Lakes, Minn., that would become part of a proposed PolyMet copper-nickel mine, is pictured on Feb. 10, 2016. (AP Photo/Jim Mone, File) (Jim Mone ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...