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Perpetua Resources Commences Detailed Engineering and Signs Procurement Contract with Idaho Power to Advance Stibnite Gold Project Towards Construction Decision

In This Article:

Successful completion of basic engineering and cost update of Stibnite Gold Project confirms world class asset with the lowest cost gold project located in a Tier 1 jurisdiction1, driven by low-cost hydro power and valuable antimony by-product essential for national defense, energy, and technology sectors.

Robust project economics underpins $3.7 billion after-tax net present value (5%) and after-tax IRR exceeding 27% at spot pricing.

Over 15% increase in job creation could support corresponding increase to existing $1.8 billion indication of interest from U.S. Export-Import Bank.

BOISE, Idaho, Feb. 13, 2025 /PRNewswire/ - Perpetua Resources Corp. (NASDAQ: PPTA) (TSX: PPTA) ("Perpetua Resources" or "Perpetua" or the "Company"), announced today that following the successful completion of basic engineering for the Stibnite Gold Project ("Project") along with the release of its 2024 Financial Update ("Financial Update"), the Company has approved commencement of detailed engineering studies with Ausenco Engineering USA South Inc. ("Ausenco") and signed a procurement contract with Idaho Power Company ("Idaho Power") for powerline materials. The Financial Update reconfirms the robust economics of the Project, indicating a $3.7 billion after-tax net present value ("NPV") (5%) and an after-tax internal rate of return ("IRR") in excess of 27% at spot prices2 and is resilient at lower prices including a $1.4 billion after-tax NPV (5%) and 15.4% after-tax IRR at long-term consensus prices3, driven by industry leading1 operating costs. All-In Sustaining Costs ("AISC") are expected to average $435 per gold ounce over the first four years of production and under $760 per gold ounce over the life-of-mine, positioning the Stibnite Gold Project to become the lowest cost gold project in the Tier 1 jurisdictions of the United States, Canada and Australia.1 The Financial Update is included in the Company's current report on Form 8-K, filed with the U.S. Securities and Exchange Commission (the "SEC") and Canadian securities regulators on February 13, 2025 (the "Current Report").

"The Stibnite Gold Project is among an elite class of gold projects, with industry leading costs, a world-class reserve of 4.8 million gold ounces and annual production profile of approximately 300,000 ounces over a 15-year life," said Jon Cherry, President & CEO of Perpetua Resources. "With the Final Record of Decision published and basic engineering complete, Perpetua looks forward to finalizing our few remaining ancillary permits, and securing financing to start construction in 2025 to become a reliable source of the critical mineral antimony for defense needs."