The Boundary Waters Canoe Area Wilderness is one of the most fragile and beloved wild places in North America. Its lakes, bogs, forests, and streams form a connected watershed where pollution does not stay in one spot. That is why the renewed push for copper-nickel mining near this region has alarmed so many people.

A narrow Senate vote has now stripped away a major federal protection that had blocked mining across a large area of the Superior National Forest upstream from the Boundary Waters. As AP News reports, the vote gives new momentum to Twin Metals, a subsidiary of Chilean mining giant Antofagasta, which has long sought to build an underground copper-nickel mine near Ely, Minnesota.

The Boundary Waters watershed includes lakes forests wetlands and connected streams.

Why Sulfide Ore Mining Near The Boundary Waters Sparks Alarm

This debate is not just about whether mining happens somewhere in northern Minnesota. It is about whether sulfide-ore mining should move ahead in a watershed tied to an internationally known wilderness.

According to Inside Climate News, opponents warn that mercury and sulfides from mining operations could damage fish, wildlife, plants, and wild rice. That concern reaches beyond recreation. Wild rice holds deep importance for Tribal Nations with treaty rights tied to these lands and waters.

Coverage from The Globe and Mail also noted that the watershed does not stop at a political boundary. Water from the region flows north into Canada, which broadens the ecological stakes.

Opponents say pollution from the mine could spread through the watershed.

Minnesota Still Has A Chance To Step In

The federal setback did not make the mine inevitable. Twin Metals still needs permits, and Minnesota still has authority over state-level review and lease decisions. The Minnesota DNR said in a recent statement that nothing about the Senate vote changes the state’s environmental standards, and that it has the legal option to cancel one specific Twin Metals lease. The agency also said it has not yet decided what to do.

Environmental concerns include mercury and sulfide contamination.

That matters because this fight has now shifted. As Mother Jones reports, the loss of federal protection has raised the stakes for every remaining state decision.

The Boundary Waters cannot absorb a mistake of this scale. Minnesota officials should act now, use every lawful tool available, and keep this wilderness watershed out of Twin Metals’ reach.

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