Perpetua Receives $6.9M from U.S. Army to Advance Domestic Antimony Supply Chain

Perpetua Resources

Stibnite Gold Project to Support Strategic Ammunition Material Testing

Perpetua receives $6.9M from U.S. Army for antimony testing, reinforcing the strategic role of domestic critical mineral development in national defense. The funding will support feasibility testing of antimony trisulfide production from the company’s Stibnite Gold Project in Idaho, targeting military-grade applications such as munitions and explosives.

This award builds on Perpetua’s existing $15.5 million contract from the Defense Ordnance Technology Consortium (DOTC) received in 2023. To date, the U.S. Department of Defense has allocated more than $80 million to the company, highlighting the urgency to establish a “ground-to-round” domestic antimony supply chain. The Stibnite deposit contains an estimated 148 million pounds of antimony, making it one of the most significant potential sources in North America.

U.S. Eyes Antimony Independence as China Cuts Exports

The U.S. relies heavily on imports for antimony, a critical mineral essential to over 300 types of munitions. However, China suspended antimony exports to the U.S. in December 2024, intensifying the need for secure domestic sources. Between January 2022 and October 2024, the U.S. imported 15,665 tonnes of antimony, with 22% coming from China.

As part of a broader national push, Perpetua recently received final federal permits for construction at the Stibnite site after being selected for expedited approval. The mine will produce both antimony and gold, making it one of the few U.S.-based projects directly aligned with defense-critical materials policy. As Perpetua receives $6.9M from U.S. Army for antimony testing, the company moves closer to restoring a vital supply chain link that has been offshore for decades.

The Metalnomist Commentary

Perpetua’s expanded partnership with the U.S. Army signals a turning point in reshoring defense-critical mineral supply. The Stibnite project could anchor a secure domestic antimony chain as global geopolitical tensions continue to restrict foreign access.