Perpetua Resources Partners with the Idaho National Laboratory to Advance Critical Mineral Pilot Plant

BOISE, Idaho, Dec. 9, 2025 /PRNewswire/ - Perpetua Resources Corp. (Nasdaq: PPTA) (TSX: PPTA) ("Perpetua Resources" or "Perpetua" or the "Company") today announced that it has entered an agreement with the Idaho National Laboratory ("INL") via Battelle Energy Alliance LLC ("Battelle") for the INL to host, commission, and operate a flexible, modular pilot processing plant expected to be capable of recovering various critical and defense-related minerals, including antimony from the Company's ores. This initiative is intended to demonstrate the feasibility of producing high-quality, military specification antimony trisulfide using material from Perpetua's Stibnite Gold Project ("Project"). In addition, it will provide opportunities to advance domestic defense mineral processing capabilities and strengthen workforce training in Idaho.

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