Any new heavy-metals mines in northeastern Minnesota would be in addition to the many open-pit iron-ore and taconite mines in the region, which have already left behind a legacy of toxic pollution and ...

The Minnesota Department of Natural Resources said Thursday it has issued permits for Poly Met Mining, Inc.’s proposed NorthMet mining project in northeast Minnesota. The announcement was ...

A federal judge in Minnesota dismissed eight environmental groups' challenges to the construction of an open-pit copper mine that they argue will destroy protected habitat and imperil several species ...

Proposed mines in northern Minnesota face an easier path with the ... and Teck American named NewRange Copper Nickel. The ...

In the first half of the 20th century, iron ore mining in central and northern Minnesota was at a peak ... The mine, already struggling among newer, open-pit mining operations, was also hit ...

Any new heavy-metals mines in northeastern Minnesota would be in addition to the many open-pit iron-ore and taconite mines in the region, which have already left behind a legacy of toxic pollution and ...