Army-backed antimony trisulfide pilot and process-development agreement with Perpetua
Summary
Perpetua Resources Idaho received an Ordnance Technology Initiative Agreement through the Defense Ordnance Technology Consortium to demonstrate a domestic antimony trisulfide supply chain using Stibnite ore. The agreement began at up to $15.5 million in 2023, received later additions, and reached a current estimated amount of $27.1 million by June 2026. The funded work includes sampling, pilot-scale production of military-specification antimony trisulfide, full-scale process design and a modular pilot plant; the Army marked the INL pilot facility's opening in July 2026.
Analytical significance
The programme extends public support beyond mine development into downstream process demonstration for military-grade antimony sulfide.
Instruments in this event
The separate financial commitments and control clauses this announcement contains, each with its own status history and evidence.
Framing anchors
Official framing, classified only from quoted passages.
establishing a secure, domestic supply chain for this essential ammunition component
Retrospective Army framing in 2026 of the DOTC effort initiated in 2023; not wording attributed to the 2023 SEC filing.
Affected materials
Related events
Events touching the same materials.
Sources (3)
Perpetua Resources Corp., Form 8-K (Ordnance Technology Initiative Agreement)
Primary sourcePerpetua Resources Corp. / U.S. Securities and Exchange Commission (EDGAR)
Filed disclosure of the 18 August 2023 OTIA through the Defense Ordnance Technology Consortium, originally up to $15.5 million, to demonstrate a domestic antimony trisulfide supply chain using Stibnite ore and to develop a modular pilot plant.
https://www.sec.gov/Archives/edgar/data/1526243/000110465923093671/tm2324218d1_8k.htm
Perpetua Resources Corp., Form 10-Q for the quarter ended June 30, 2026
Primary sourcePerpetua Resources Corp. / U.S. Securities and Exchange Commission (EDGAR)
Filing date 2026-08-14 independently verified against SEC EDGAR accession 0001104659-26-097134 index; 2026-06-30 is the period-end, not the publication date. Filed disclosure that all $59.2 million available under the DPA TIA had been disbursed and the agreement expired 16 June 2025; also records the OTIA's later additions to a current estimated $27.1 million and ongoing reimbursements. Separately describes the EXIM board-approved $2.9 billion senior secured loan as subject to definitive documentation and conditions precedent.
https://www.sec.gov/Archives/edgar/data/1526243/000110465926097134/ppta-20260630x10q.htm
U.S. Army, Perpetua Resources, and INL launch domestic antimony sulfide processing facility
Primary sourceU.S. Army
Army article on the 29 July 2026 opening of the Idaho National Laboratory prototype antimony-sulfide processing facility. States that the Army effort began in 2023 at $27.1 million and that the separate DPA project with Perpetua totaled about $59.3 million.
https://www.army.mil/article/294430/u_s_army_perpetua_resources_and_inl_launch_domestic_antimony_sulfide_processing_facility
Citation
Cite this record
This cites the record — the project's coding of the instrument. For a claim about what a government actually did, cite the primary document itself; the sources above carry the canonical URLs.
Strategic Materials Policy Tracker. "Army-backed antimony trisulfide pilot and process-development agreement with Perpetua." Record evt-us-army-perpetua-otia-2023, 2023-08-18. https://strategic-materials-policy-tracker.vercel.app/events/evt-us-army-perpetua-otia-2023