December 2, 2025 — Developers’ efforts to overturn the cancellation of a vast gold and copper mine planned for southwest Alaska are getting a boost from national mining and pro-business groups, including the U.S. Chamber of Commerce.
On Nov. 24 and Nov. 25, the Chamber and the National Mining Association filed separate friend-of-the-court briefs in the lawsuit brought by the developers of the proposed Pebble Mine against the Environmental Protection Agency, which vetoed the mine.
Neither group has intervened in the case against the EPA, but the briefs represent the groups’ support for the proposed mine and offer legal arguments that Judge Sharon Gleason could consider as she debates whether to move the project forward.
In 2023, the EPA invoked a rarely used “veto” clause of the Clean Water Act to say that there was no way that the proposed Pebble Mine could be developed without significant harm to the environment. The large mineral deposit is located at the headwaters of Bristol Bay, the most abundant sockeye salmon fishery in the world.
The administration of Gov. Mike Dunleavy, which supports the project, and the proposed mine’s developers, filed separate lawsuits in federal court to overturn the rejection, as did two Native corporations that work as contractors for the developers. Those cases have since been combined.