Court Clears Path For Idaho’s Critical Stibnite Antimony Mine

BusinessEnergyCourt Clears Path For Idaho’s Critical Stibnite Antimony MineByDavid Blackmon,Senior Contributor.Forbes contributors publish independent expert analyses and insights. David Blackmon is a Texas-based public policy analyst/consultant.Follow AuthorJun 04, 2026, 08:11am EDTMckinsey Lyon, vice president of external affairs for Perpetua Resources, points out the layout of some of the mining companyís environmental restoration plans at its proposed Stibnite Gold Project. The company hopes to begin mining operations for gold and antimony by 2029. (Sarah A. Miller/Idaho Statesman/Tribune News Service via Getty Images)TNSThe U.S. District Court for Idaho last week denied an injunction sought by climate activist groups, ruling that construction may proceed on the Stibnite Gold Project in central Idaho. This decision, secured with the active involvement of the Justice Department’s Environment and Natural Resources Division, represents a significant win not just for the project’s developer, Perpetua Resources, but for the Pentagon, which covets the large volumes of antimony the Stibnite mine can produce. An “Urgent” Antimony ResourceThe Stibnite project, as I’ve written here in the past, is a carefully vetted initiative following years of environmental reviews, culminating in U.S. Forest Service approval in January 2025. The project will produce substantial quantities of gold (about 4.2 million ounces) and silver (1.7 million ounces) over its life, but its real strategic value lies in antimony reserves, an estimated 115 million pounds. Antimony is a critical mineral essential for munitions, military-grade antimony trisulfide, lead-acid batteries, advanced sensors, radar materials, and flame retardants. For too long, the U.S. has depended on foreign sources via supply chains dominated by China, which has repeatedly restricted exports and left our National Defense Stockpile dangerously depleted. Between 2020 and 2023, China accounted for 70% of U.S. rare earth import...