The Department of Defense (DoD) has initiated this project to establish a domestic supply chain for antimony trisulfide, which is crucial for defen…
Office of NEPA Policy and Compliance
June 25, 2025
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The Department of Defense (DoD) has initiated this project to establish a domestic supply chain for antimony trisulfide, which is crucial for defense applications. Advanced Technology International (ATI), managing the Defense Ordnance Technology Consortium (DOTC), issued a request for proposal to Perpetua Resources Idaho, Inc. (Perpetua Resources) to include the shipment, assembly, commissioning, and operation of a flexible, modular pilot plant. This pilot plant would validate the technology and ability to produce streams of concentrate such as antimony trisulfide for antimony sulfide and pyrite concentrate that contains gold from stibnite ore.