United States Antimony Corporation (UAMY): A Closer Look at This Critical Minerals Producer

Key Takeaways

• United States Antimony Corporation (UAMY) is a publicly traded natural resources company focused on antimony, zeolite, and precious metals.
• The company operates the only significant permitted antimony smelter in the United States, located in Thompson Falls, Montana, with additional facilities in Mexico and a zeolite mine in Idaho.
• Antimony is designated a critical mineral by the U.S. government and is used in flame retardants, munitions, batteries, semiconductors, and solar panels.
• UAMY has attracted attention as a domestic supplier amid export restrictions on antimony from China and growing U.S. defense and industrial demand.
• The company maintains a vertically integrated business model spanning mining, milling, smelting, and sales, and has expanded into tungsten and cobalt exploration.

Introduction

United States Antimony Corporation, often referred to as USAC or U.S. Antimony, is a small-cap critical minerals company listed on the NYSE American under the ticker UAMY. It produces antimony along with zeolite and modest amounts of precious metals such as gold and silver. Because antimony plays a key role in defense and manufacturing, UAMY has drawn interest from investors focused on domestic supply chains and mineral independence. I also checked this using Tickeron’s AI Screener to see how the stock compares to others in the industry.

Company Background and Operations

United States Antimony Corporation was incorporated in Montana in January 1970 to mine and produce antimony products, with production dating back to 1969. It was re-incorporated in Texas in August 2025, with headquarters in Dallas, Texas. Shares have traded on the NYSE American since May 2012 under the symbol UAMY.

The company operates as a fully integrated mining, transportation, milling, smelting, and sales organization. Key assets include an antimony smelter and precious-metals refinery in the Burns Mining District near Thompson Falls, Montana, plus smelting and milling facilities in Mexico. The Montana site stands out as the only significant permitted antimony smelter in the United States. From what I see, this vertical integration sets it apart in North America.

Core Products and Business Segments

UAMY organizes its activities around two primary segments. In antimony, the company processes ore into antimony oxide, antimony metal, antimony trisulfide, and sodium antimonate. Antimony oxide serves as a flame retardant in plastics, rubber, textiles, paints, and coatings, while antimony metal finds use in bearings, storage batteries, and ordnance, and antimony trisulfide acts as a primer in ammunition. Through its wholly owned subsidiary Bear River Zeolite in Preston, Idaho, the company mines and processes natural zeolite for water filtration, soil amendment, animal nutrition, odor control, and environmental remediation. It also recovers precious metals, mainly gold and silver, at its Montana facility. In recent years, UAMY has added mining claims and leases in Montana, Alaska, and Ontario, Canada, targeting antimony as well as tungsten and cobalt.

Business Model and Market Position

The company’s approach emphasizes vertical integration across the antimony supply chain, from raw ore to finished products. It has shifted from heavy reliance on foreign materials toward a mix of international suppliers and its own domestic claims. This positions UAMY as the only fully integrated primary antimony producer in North America outside of China and Russia. Markets include flame-retardant manufacturing, ammunition and munitions, battery production, semiconductors, and photovoltaic glass. Zeolite sales support agricultural, water-treatment, and environmental customers. UAMY has also engaged with U.S. government entities, given antimony’s status as a critical mineral designated by the Department of the Interior and Department of Defense.

Why Investors Follow UAMY

Interest in UAMY stems mainly from antimony’s strategic role and efforts to secure domestic critical-mineral supplies. After China imposed export restrictions on antimony in late 2024, U.S. buyers and defense agencies turned more attention to domestic sources, highlighting UAMY’s position as a rare North American processor. Long-term drivers include its domestic smelting capability, expanding mining claims, and moves into tungsten and cobalt. A lack of comparable domestic capacity and the technical challenges of processing antimony ore, which often contains impurities like lead, arsenic, and sulfur, further support its market stance. The zeolite operations add a separate revenue stream linked to agriculture and environmental uses. One thing that stands out is how these factors tie the company’s outlook to broader supply-chain trends.

Risks and Important Considerations

Investors should consider several factors with UAMY. It operates in a small, concentrated global antimony market long dominated by Chinese producers, where commodity price swings can significantly affect results. The company has noted that it has no proven or probable antimony reserves as defined by the SEC, and environmental limits have historically restricted mining at its Montana site, leading to reliance on foreign feedstock. Additional points include customer and supplier concentration, operational and permitting risks, exposure to regulatory and geopolitical shifts, and the capital-intensive nature of mining and smelting. As a small-cap firm, UAMY can see greater share-price volatility than larger producers. These elements link its financial profile closely to antimony pricing, availability, and expansion progress.

Using Tools for Further Research

When analyzing companies in this space, I often turn to Tickeron’s AI Screener to quickly compare technical indicators, fundamentals, and industry trends across a wide range of stocks. It helps surface ideas that align with specific strategies without sifting through thousands of options manually.

Conclusion

United States Antimony Corporation holds a distinctive place as one of the few North American producers and processors of antimony, a critical mineral tied to defense, energy, and industrial supply chains. Its vertically integrated model, domestic smelting capability, and growing zeolite and critical-minerals portfolio position it as a notable player in the natural resources sector. For investors, UAMY reflects a company whose relevance connects directly to global supply dynamics, commodity pricing, and the strategic emphasis on U.S. mineral independence. I’m watching this closely as supply-chain developments unfold.

Disclaimer

The information on this webpage is provided for general informational and educational purposes only and is not intended as investment advice, a recommendation to purchase or sell any security, or an offer or solicitation related to investments. It does not consider your personal financial situation, goals, or risk profile, and all investing carries inherent risks, including the possibility of losing your entire investment. For more details, please review our full disclaimer.

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Contributor

Sergey Savastiouk|Expert

Sergey Savastiouk, Ph.D. has a degree in Applied Mathematics from Moscow University and has extensive experience as an entrepreneur, investor, manager, and mathematician. His professional expertise is in applied mathematics, mathematical modeling, system and pattern analysis, and software and hardware system integration. He has served as the CEO of several hi-tech start-up companies and nonprofit organizations, which has given him proven capabilities in business strategy for high-tech start-up companies, market assessment, company formation, team building, product development, marketing, and sales. He has published numerous articles in journals and magazines on related fields. As a retail investor, he spent 15 years developing his proprietary trading and quantitative algorithms (now Tickeron’s A.I.), which brought him significant returns in trading the stock market. His current work and goal in founding Tickeron is to bring professional, sophisticated stock market analysis capabilities to retail investors via an easy-to-use interface.

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