The developers of a proposed copper-nickel mine near the Boundary Waters plan to use a potentially safer dry method of storing mine waste instead of the kind of wet tailings pond more common in the ...

Twin Metals, the company hoping to build an underground copper-nickel mine in the same watershed as the Boundary Water Canoe Area Wilderness, no longer plans to store its tailings behind a dam and ...

MinnPost’s journalists are out in the community to report on the things that are happening in Minnesota. Your support right now will help fund their work AND keep our news paywall-free. The safety of ...

The records request to the Minnesota Department of Natural Resources resulted in the release of 17 files of e-mails to and from the agency's commissioner since Jan. 1. The topic: PolyMet and Twin ...

The Isle of Palms Planning Commission voted to recommend that city council not consider dry-stack storage in the redesign of the city marina. The commission made the decision unanimously at a special ...

ST. PAUL, Minn. (AP) --The developers of a proposed copper-nickel mine near the Boundary Waters plan to use a potentially safer dry method of storing mine waste instead of the kind of wet tailings ...

ST. PAUL — The developers of a proposed copper-nickel mine on the edge of the Boundary Waters Canoe Area Wilderness said Thursday they plan to use a potentially safer dry method of storing mine waste ...