Mining

The state's Pollution Control Agency says United Taconite did not perform the regular emissions tests required by its air permit.

Residents around Calumet received a peek behind the curtain Aug. 21, 2026, at the iron reclamation project set to transform the former Hill Annex Mine.

Stauber, state officials and local mayors voiced their opposition at a press conference Wednesday, Aug. 19, 2026.

The Babbitt mine and Hoyt Lakes processing plant is expected to impact about 1,100 acres of wetlands, according to the company's permit application.

Walz is instructing the DNR not to grant permits. This move bears a strong risk of litigation over Twin Metals, which wants to extract copper, nickel, cobalt and other valuable metals from underground veins.

The meeting was an early step in the environmental review process required by state law for any proposed mines in Minnesota.

Mesaba State Rooms lodging project did not align with city plans, Nashwauk City Council decided.

The University of Minnesota’s Natural Resources Research Institute, or NRRI, launched a new simulator to test innovations in iron refining July 27, 2026, in Coleraine.

NorthMet, formerly owned by PolyMet and now controlled by NewRange Copper Nickel, is one of three proposed copper-nickel mines in Minnesota. A reworked project plan is now before the DNR.

The walk on July 25, 2026, spanned 13 miles from Big Sandy Lake in McGregor to Tamarack, with women taking turns carrying a bucket of water.