U.S. Army Grants Perpetua Resources $6.9M to Secure Antimony Supply Chain
U.S. Army boosts Perpetua Resources with $6.9M to advance America’s only domestic supply of antimony trisulfide amid rising geopolitical urgency.

Perpetua Resources Corp. is once again stepping into the spotlight of America’s critical minerals strategy, securing an additional $6.9 million from the U.S. Army under the Defense Ordnance Technology Consortium (DOTC). The award builds on the $15.5 million granted in 2023 and reaffirms the strategic importance of the company’s Stibnite Gold Project in Idaho—a project now at the center of efforts to establish a secure, domestic supply chain for antimony trisulfide, an irreplaceable material in American munitions.
The latest funding announcement pushes Perpetua’s total backing from the Department of Defense to over $80 million, a staggering testament to the Project’s role in national security. The funds will be used to expand material sampling and construct a more robust, flexible pilot plant designed to process antimony and other critical minerals at military-grade specifications.
Securing Antimony for National Defense
At the heart of this defense partnership is antimony trisulfide, a mineral most Americans have never heard of, but which plays a vital role in military applications. Used in over 300 types of munitions, from small arms to advanced missile systems, antimony trisulfide isn’t optional—it’s essential.
With China historically dominating global supply and cutting off exports to the U.S. in 2024, the urgency to source this critical mineral domestically has reached a boiling point. Perpetua’s Stibnite Gold Project—expected to fulfill up to 35% of America’s antimony demand during its initial six years—is suddenly more than just a mining operation. It’s a strategic pillar in the nation’s broader push for mineral independence.
Colonel Steven Power, Project Manager for Maneuver Ammunition Systems at Picatinny Arsenal, put it bluntly: “Establishing a fully domestic supply chain of this critical mineral is foundational to keeping America’s warfighters safe.”
