By Charles Pitts
The Export-Import Bank of the United States (EXIM) board has unanimously approved a $2.9 billion senior secured loan for Perpetua Resources’ Stibnite Gold Project in Idaho. This landmark financing, issued under the federal “Make More in America” initiative, is designed to fully fund the construction of one of the most strategically significant mining projects in North America.
The 13-year credit facility marks a decisive move by the U.S. government to secure domestic supplies of antimony: a critical mineral essential for defense, energy storage, and semiconductor manufacturing: where China currently holds an 80% global market share. For the mining industry and its investors, the approval signals a shift toward state-backed de-risking of large-scale domestic resource extraction.
The Loan: “Make More in America” at Scale
The $2.9 billion package is structured to provide Perpetua Resources with approximately $2.4 billion in upfront liquidity at the start of construction, with the remainder allocated to capitalized interest and EXIM’s exposure fees. The interest rate is fixed at the prevailing long-dated U.S. Treasury bond rate plus 100 basis points, established at the first drawdown. Repayments are scheduled to begin in 2030, aligning with the project’s expected production ramp-up.
This financing is the largest project-specific commitment in EXIM’s history for a mining endeavor. It underscores the “Make More in America” initiative’s mandate to revitalize domestic manufacturing and supply chains. By covering the entirety of the project’s estimated construction costs, the loan effectively bypasses the traditional, often dilutive, equity-heavy financing routes usually required for billion-dollar mining developments.
Antimony: The Geopolitical Pivot
While the project is named for its significant gold reserves, its strategic value rests on antimony. The mineral is indispensable for the U.S. Department of Defense (DoD), which uses it in everything from armor-piercing ammunition and night-vision goggles to infrared sensors.
China’s 2024 implementation of strict export controls on antimony triggered a global supply crunch, forcing Western powers to accelerate domestic alternatives. The Stibnite Gold Project is currently the only domestic source of antimony capable of meeting nearly 35% of U.S. demand within its first six years of operation.
Antimony Price Trend 2026: Drivers and Risks
As we move through 2026, the antimony price trend 2026 remains defined by structural scarcity. Analysts point to three primary drivers:
- China’s Export Quotas: Ongoing restrictions from the world’s largest producer have created a “policy premium” that keeps prices elevated above 10-year averages.
- Military Demand: Rising geopolitical tensions have led to increased procurement of munitions, placing a floor under demand regardless of broader economic cycles.
- Grid-Scale Storage: The emergence of liquid metal batteries: which rely on antimony: for long-duration energy storage is adding a new, non-traditional demand segment.
Gold Production and Market Outlook
Despite the critical mineral focus, gold remains the primary revenue driver for the project. Stibnite is expected to be one of the highest-grade, lowest-cost open-pit gold mines in the United States.
The project’s economics are bolstered by the current gold price forecast 2026 outlook. Bullion has maintained a structural bull run, supported by central bank diversification and persistent concerns over U.S. fiscal debt levels. For a capital-intensive project like Stibnite, the combination of state-backed debt and high-margin gold production creates a robust financial profile that is rare in the junior-to-mid-tier mining space.
Market Snapshot: May 2026 Commodity Prices
| Commodity | Spot Price (May 2026) | 12-Month Change | 2026 Outlook |
|---|---|---|---|
| Gold (oz) | $2,845.00 | +12.4% | Bullish |
| Antimony (tonne) | $31,500.00 | +22.1% | Supply-Constrained |
| Silver (oz) | $34.20 | +8.9% | Neutral/Positive |
| Copper (lb) | $4.85 | +14.2% | Deficit-Driven |
Data represents indicative market rates as of May 26, 2026.
Permitting and Environmental Restoration
The Stibnite project has been a lightning rod for environmental discussion, yet it achieved “permit-ready” status in 2025 after a decade-long review process. Perpetua’s plan involves more than just extraction; it includes the restoration of a legacy mining site that was abandoned after World War II.
Key environmental features include:
- Tailings Reprocessing: Cleaning up and safely storing over 10 million tons of legacy tailings and spent ore.
- River Restoration: Relocating the East Fork South Fork Salmon River to its original channel, which has been blocked by an abandoned mining pit for 80 years.
- Fish Passage: Restoring access to miles of critical spawning habitat for salmon and bull trout.
This “restoration-led” mining model was a prerequisite for the EXIM loan, as the bank increasingly prioritizes ESG (Environmental, Social, and Governance) performance in its lending criteria.
Timeline: The Road to Production
With the EXIM board’s approval secured, Perpetua Resources expects to finalize definitive loan documentation in the second half of 2026. Early-stage site preparation is anticipated to begin shortly thereafter, with full-scale construction slated for 2027.
If the current timeline holds, the first gold and antimony production will occur in the late 2020s. The mine life is currently estimated at 15 years, during which time it will provide hundreds of high-paying jobs in rural Idaho and contribute significantly to the state’s tax base.
Strategic Investment: Critical Minerals Stocks to Buy 2026
For market participants, the Perpetua/EXIM deal has shifted the narrative surrounding critical minerals stocks to buy 2026. Traditionally, junior miners are plagued by “funding gap” risks where projects stall between permitting and production. The direct involvement of EXIM effectively removes the single largest hurdle for Perpetua.
However, risks remain. Large-scale projects are notoriously susceptible to cost overruns and technical challenges during the ramp-up phase. Investors are increasingly looking at companies that have:
- Government Backing: Direct loans or grants from agencies like EXIM or the Department of Energy (DOE).
- Dual-Metal Hedging: Projects that produce both a high-liquidity commodity (gold) and a high-strategic-value mineral (antimony or lithium).
- Clear Permitting Path: Projects that have already cleared the National Environmental Policy Act (NEPA) hurdles.
Operational Monitoring and Digital Integration
The scale of the $2.9 billion investment requires rigorous oversight. Perpetua has committed to deploying state-of-the-art digital twins and real-time monitoring systems to track both operational efficiency and environmental compliance.
By integrating AI-driven logistics and autonomous-ready haulage paths from the outset, the project aims to minimize its carbon footprint while maximizing throughput. This focus on “Smart Mining” is expected to set a benchmark for other domestic projects seeking federal backing under the “Make More in America” umbrella.
Final Thoughts: A New Era for U.S. Mining
The approval of the $2.9 billion EXIM loan for the Stibnite Gold Project is more than a corporate milestone; it is a signal that the U.S. government is willing to act as a “lender of first resort” for projects deemed critical to national security. As the world navigates a volatile commodity landscape, the integration of gold’s financial stability with antimony’s strategic necessity creates a compelling template for the future of North American resource development.
