A proposed copper-nickel mine an hour and a half north of Duluth has changed its plan for the single most contested part of the project, and reapplied for the federal permit it lost.
NewRange Copper Nickel proposes an open pit mine and processing operation near Hoyt Lakes, on ground formerly worked by Erie Mining Company and LTV Steel. The project has been in environmental review, under one name or another, since 2004. It received key state permits in 2018. It has been litigated, remanded and revoked since.
The change announced in late July is substantive rather than cosmetic. The company will no longer seek to expand the existing LTV tailings basin, the element a state administrative law judge found in 2023 did not satisfy state law on bentonite lining and closure water management. Tailings would instead go into old iron ore pits at the former mining site. The company describes a closed-loop water management system that would cut discharge by roughly 75 percent, raises daily processing from 32,000 to 40,000 tons of ore, shortens mine life from 20 years to 16, and replaces rail haulage with an eight-mile covered conveyor.
The company says it holds 21 of the 24 permits it needs. The three outstanding are the federal Section 404 wetland permit, a state permit to mine, and a state water permit. The Section 404 application was resubmitted after the previous administration revoked the original on the grounds that the project did not comply with the Fond du Lac Band's water quality standards. Federal review is projected at about 18 months; the Minnesota DNR was to determine within roughly a month whether a supplemental environmental impact statement is required, with the agency signalling that the 2016 environmental impact statement remains a useful baseline.
Positions on the change are what you would expect. Industry groups read it as environmental review working as designed. Environmental advocates argue the project has changed enough that Minnesota should start over with a new permit rather than amend an old one.
Why this belongs on a Twin Ports guide
Because of where the water goes.
The site sits in the headwaters region of the St. Louis River. That river runs southwest and then swings east, through Cloquet, past the Fond du Lac Reservation, down through the gorge at Jay Cooke State Park, and out into the estuary that forms the harbor between Duluth and Superior before it reaches Lake Superior. It is the largest U.S. tributary to the lake.
Everything in the Twin Ports' western neighborhoods sits on that river: Fond du Lac, Gary-New Duluth, Morgan Park, Smithville, Riverside, Oneota, Grassy Point, and on the Wisconsin side the Oliver and Billings Park shorelines. The western waterfront trail runs along it. The St. Louis River estuary has been the subject of one of the largest freshwater restoration efforts in the country, working through decades of legacy industrial contamination from the mills and plants that lined it.
That history is the reason people here pay attention to upstream permits. Not because a mine 90 miles away is an immediate threat to a house in Riverside, but because the community has already spent a very long time and a great deal of public money cleaning up what earlier industry left in that estuary, and has a reasonable interest in not repeating it.
The economic half, stated plainly
Northeastern Minnesota's economy has been a mining economy for a century and a quarter, and the Twin Ports is the port that ships it.
Taconite from the Iron Range moves through the ore docks in Duluth and Superior. Silver Bay exists because of a taconite plant. A substantial slice of regional employment, and the freight base of the port itself, is tied to what gets mined inland. A new mining operation of this scale is a meaningful addition to that base; the absence of one is a meaningful absence.
Both halves of that are true simultaneously, and a guide about where to live in this region does its readers no favors by pretending otherwise. The argument over copper-nickel mining in Minnesota is not an argument between people who want jobs and people who want clean water. It is an argument about whether a specific project at a specific site can deliver the first without costing the second, conducted through permits.
What to watch, and what not to conclude
The DNR's supplemental EIS decision is the near-term milestone. Requiring one adds substantial time; declining to adds litigation risk.
The Section 404 review at roughly 18 months is the long pole, and it is the one that turns on the water quality standards question that revoked the last permit.
Nothing here changes a Twin Ports housing decision today. No permit issued this year produces a mine this decade, and the estuary restoration work in Duluth and Superior proceeds on its own track regardless. If you are buying along the St. Louis River in the western neighborhoods, the relevant water questions are the ones about the site in front of you: legacy contamination on the parcel, flood elevation, and the condition of the shoreline. Those are answerable now, and they matter more to a specific property than anything happening near Hoyt Lakes.
Reported from Duluth News Tribune coverage, Minnesota Department of Natural Resources project records, and Minnesota Pollution Control Agency materials.