Michigan’s Upper Peninsula is seeing its most concentrated copper and nickel activity in decades. Highland Copper was awarded a $50 million state grant in August for its Copperwood project, split between Copperwood Resources and the Gogebic County Road Commission, and holds a non binding $250 million letter of interest from the US Export-Import Bank from September 2025 toward an estimated $400 million initial capital requirement. Kinterra Capital submitted a Part 632 mining permit application in September for White Pine North alongside a prefeasibility study. Perseverance Metals announced a nickel copper sulphide discovery in September, and Talon Metals reported a mineralised magmatic conduit at its Roland target in October, part of a 1,600 square kilometre Upper Peninsula exploration package that also includes drilling at Boulderdash.
The anchor is Eagle, Talon’s high grade nickel copper mine, the only operating primary nickel mine in the United States and the first operation permitted under Michigan’s Part 632 nonferrous metallic mining law. An April technical report extended Eagle’s reserve backed mine plan into the second half of 2030, largely through the Keel deposit. Copperwood is the only other Upper Peninsula project to hold a Part 632 permit, listed by the state as issued and still awaiting effect. Part 632 requires groundwater and surface water monitoring during operations and for 20 years after mining ends, and Eagle funds up to $300,000 a year for an independent Community Environmental Monitoring Program.
The counterweight is legacy. The region once supplied 96 percent of United States copper, and at Torch Lake, copper still contaminates sediments about six decades after mining ceased; the US Environmental Protection Agency put Torch Lake on the Superfund National Priorities List in 1986. A 2025 study including US Geological Survey scientists found copper concentrations in Torch Lake sediments about 200 percent higher than in a nearby reference lake, with all measurements at least nine times a threshold for predicted harmful effects. Baseline watershed work to establish natural ranges before more mining takes place is expected to run through September 2027.
Jurisdiction watch: Michigan is the North American version of the permitting question running through this edition, in Colombia and Ghana in opposite directions. The state’s bet is that a strict, monitoring heavy law written with environmental input can license sulphide mining beside Lake Superior, which holds nearly 10 percent of the world’s surface fresh water. Whether Part 632 can process several projects at once, not just one careful operator, is the test now starting.