>Perpetua Resources
USASpending.gov
First contracts awarded in 2024. Top grant has outlayed ~$9M of a potential $59Million for Antimonry Trisulfide Production.
From Oct. 2025: "Antimony metal and antimony trisulfide have critical applications in munitions, especially low- and medium-caliber, where it is used in primer production and case hardening,"said Assistant Secretary of War for Industrial Base Policy Mike Cadenazzi. "The award to ARR advances North American sourcing of this critical mineral for the defense industrial base."
While antimony has long been a strategic metalloid to the War Department, China's 2024 ban on exporting antimony to the U.S., coupled with Russia's war with Ukraine, has elevated antimony's criticality.
This is because China, Russia, and Tajikistan control more than 90% of the global supply, leaving American manufacturers with limited alternatives for the more than 50 million pounds of antimony they require each year for a wide range of defense, industrial, and high-tech applications.
https://www.miningnewsnorth.com/story/2025/10/03/news/pentagon-invests-434m-in-alaska-antimony/9288.html