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Rules of the Game · Americas · Trade & Industrial Policy

EXIM Bank Funds $2.9B Stibnite Gold-Antimony Mine in Idaho; Strategic Mineral Push Accelerates

The U.S. Export-Import Bank approved a $2.9 billion loan to Perpetua Resources for the Stibnite gold-antimony project in Idaho, which the Trump administration fast-tracked. The project began early works construction in 2025.
AI synthesis, editor-reviewed · 1 source · May 21, 2026 · Confidence medium (one outlet)
Photo: Mining.com

The EXIM loan is a proxy for industrial policy reorientation. If Stibnite reaches nameplate capacity and EXIM's concessional terms ($2.9B at below-market rates) become the model for other critical mineral projects, the U.S. is shifting from tariff-based supply security (Trump's stated preference) to direct capital deployment in domestic extraction and processing.

This competes with AUKUS allied procurement — if U.S. capital is locked into Stibnite, it's not available for allied critical mineral co-investment in Australia or Canada.

Watch whether Perpetua's loan triggers similar EXIM deployments for lithium (Thacker Pass, Nevada) or rare earths (Mountain Pass, California) — the aggregate tells you whether this is one-off opportunism or systematic critical mineral industrial policy.

WHY IT MATTERS

This is a direct capital deployment to secure domestic antimony supply — a critical mineral where the U.S. has zero domestic production and China controls 70% of global output.

The EXIM loan signals that antimony supply risk has moved from a procurement issue to a national security priority warranting concessional public financing. Perpetua's timeline matters: if Stibnite reaches commercial production by 2028-2029, it reduces U.S. dependence on Chinese antimony for semiconductor manufacturing, advanced alloys, and military-grade ordnance.

Watch the project's permitting schedule and whether additional federal subsidies (CHIPS Act, Defense Production Act) flow to Stibnite or competing domestic rare earth/critical mineral projects by Q4 2026.

WHAT THIS DOESN’T TELL US

What is the actual production ramp timeline and nameplate capacity — and does Stibnite's antimony output target the 15,000 metric tons annually needed to supply U.S. electronics and defense manufacturing, or is this a smaller-scale hedge against supply disruption?

In this deal: Perpetua Resources, Export-Import Bank of the United States
Sources: Mining.com
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