United States Antimony Announces Completion of New Technical Report on Nolan Creek, Alaska Gold/Antimony Deposit

Underground bulk sampling has begun, with material destined for Montana to test production economics and processing practicality.

Rhea-AI Summary

United States Antimony (UAMY) completed a technical report defining gold and antimony resources at its wholly owned Nolan Creek property in Alaska. The report complies with SEC S-K 1300 mineral disclosure rules, and the company plans to file it with the SEC today.

Measured and indicated resources have stated in-situ values of $233.9 million for antimony and $79.9 million for gold, before mining, transport, processing costs and recovery. Mining began in October with excavation of an approximately 1,000-ton exploration bulk sample. A transportation contractor will deliver the sample to the Radersburg, Montana mill. USAC plans processing in preparation for November and December sales and aims to demonstrate in the first half of 2027 that Nolan Creek can fully supply the mill's rated feed capacity. The bulk sample is intended to test production economics and the practicality of producing military-specification antimony trisulphide.

8 points · 0 major

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0 major · 1 point

Hollow bars mark forward-looking points. How the balance works

Positive

• Moderate pointMeasured and indicated resources carry $233.9M antimony and $79.9M gold in-situ values, before costs and recovery.
• Minor pointThe completed S-K 1300-compliant technical report defines resources at wholly owned Nolan Creek.
• Minor pointUnderground mining began in October, excavating an exploration bulk sample of approximately 1,000 tons.
• Minor point. Forward-looking: it has not happened yet and may not happen.A contracted Alaskan transporter will deliver the bulk sample to USAC's Radersburg mill.
• Minor point. Forward-looking: it has not happened yet and may not happen.USAC plans bulk-sample processing in preparation for November and December 2026 sales.

3 minor points

• Minor point. Forward-looking: it has not happened yet and may not happen.USAC targets demonstrating supply sufficient for Radersburg's rated feed capacity in the first half of 2027.
• Minor pointAdditional Alaskan State Claims expand the Nolan Creek claim package.
• Minor point. Forward-looking: it has not happened yet and may not happen.The mining contractor targets two daily shifts by the end of October.

Negative

• Minor point. Forward-looking: it has not happened yet and may not happen.Bulk sampling must test overall economics and practicality of producing military-specification antimony trisulphide.

Key Figures

Gold price assumption: $4,000/oz Antimony price assumption: $8.30/lb Contained antimony in-situ value: $233.9M +3 more

Gold price assumption

$4,000/oz

Price assumption used in assessing Nolan Creek's economic potential

Antimony price assumption

$8.30/lb

Price assumption used in assessing Nolan Creek's economic potential

Contained antimony in-situ value

$233.9M

Before mining, transport, processing costs and recovery

Contained gold in-situ value

$79.9M

Before mining, transport, processing costs and recovery

Exploration bulk sample

Approximately 1,000 tons

Mining operations began this month

Site-capacity demonstration target

First half of 2027

Company plan to demonstrate capacity to meet Radersburg mill-feed capacity

Key Terms

s-k 1300 regulations, qualified person, measured and indicated, long hole open stope mining methods

4 terms

s-k 1300 regulations regulatory

"The Technical Report, compliant with SEC S-K 1300 Regulations"

Regulation S-K Item 1300 (often shortened to "S-K 1300") is an SEC disclosure rule that requires public companies to include standardized climate-related information in their registration statements and periodic reports. It covers how a company’s governance and management address climate-related risks and opportunities, the processes used to identify and manage those risks, the actual and likely material impacts of climate matters on strategy and financial planning, and certain climate-related targets and transition plans. The rule also requires disclosure of greenhouse gas (GHG) emissions, with direct (Scope 1) and certain indirect (Scope 2) emissions typically required and Scope 3 (value-chain) emissions required only in specific circumstances (for example, when material or when the company has publicly set targets that include Scope 3); it applies to companies subject to SEC reporting obligations.

qualified person regulatory

"recognized as a Qualified Person in accordance with the S-K 1300 Regulations"

A qualified person is someone with specialized knowledge, experience, and training in a particular field, allowing them to accurately assess and verify information or work. Their expertise helps ensure that reports, evaluations, or decisions are trustworthy and meet required standards. For investors, a qualified person provides confidence that the information they rely on is credible and properly validated.

measured and indicated technical

"The existing exploration drift intersects the highest confidence material: measured and indicated."

Measured and indicated are two levels of confidence used to describe the size and quality of a mineral deposit: "measured" means the quantities and grade are well tested and closely known, while "indicated" means they are reasonably estimated but with more uncertainty. Investors use these categories to judge how reliably a resource can be converted into reserves and future cash flow—think of measured like a weighed recipe and indicated like a good estimate based on past batches.

long hole open stope mining methods technical

"using long hole open stope mining methods."

An underground mining family that uses long, parallel blast holes drilled from development headings or sublevels into an orebody, then blasts and removes the broken ore through open stopes (large voids) via drawpoints. The method commonly includes driving drill drifts or ring-drifts on several levels, drilling long holes across the stope span (often from the hanging wall toward the footwall), blasting in planned cut patterns and drawing the fragmented ore down to mucking levels; it is frequently applied to steeply dipping, relatively continuous orebodies and can be operated top‑down or bottom‑up depending on design. Limitation: it requires rock conditions and orebody geometry that permit unsupported or backfilled open stopes (or engineered backfill where required), and careful sequencing and ground control to avoid collapse or dilution.

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DALLAS, TX / ACCESS Newswire / October 26, 2026 / United States Antimony Corporation ("USAC," "US Antimony," or the "Company"), (NYSE:UAMY)(NYSE Texas:UAMY), a leading producer and processor of antimony, zeolite, and other critical minerals, and the only fully integrated antimony company in the free world outside of China and Russia, announced today the completion of a new Technical Report defining the gold-antimony resources on its 100% owned Nolan Creek Property located in northern Alaska. The Technical Report, compliant with SEC S-K 1300 Regulations will be filed with the SEC under a Form 8-K today. This Technical Report was authored by Mr. Thomas K. Bundtzen, President of Pacific Rim Geological Consulting, Inc recognized as a Qualified Person in accordance with the S-K 1300 Regulations.

Nolan Creek (Antimony & Gold)

The company acquired the Nolan Creek BLM Claims through a Trustee's Sale at the Courthouse steps in a public auction on January 30, 2026, after identifying the property and region as having high potential for hosting antimony as well as gold deposits. The Nolan Creek deposit is located approximately 175 miles north of Fairbanks, Alaska. The property was previously owned by a private company who conducted exploration and mining of both placer and lode targets from both surface and from an underground operation more than twenty years ago. Management of US Antimony chose to further expand the claim package by purchasing Alaskan State Claims (shown in green below) over the wider area to capture the region's full potential. The dark grey areas represent individual placer claim holders in the area. The region was predominately open since the last commercial miner in the area abandoned the Nolan Creek region when gold prices were significantly depressed.

Considering the economic potential of Nolan Creek, USAC is using $4,000/oz gold price and $8.30/lb antimony price. Currently all planned operations are within the lode claims. The existing exploration drift intersects the highest confidence material: measured and indicated. Phase 2 of the operation, after the bulk sample, will continue to target this M&I material which has a current insitu value of $233.9M from contained antimony and $79.9M from contained gold (before mining, transporting and processing costs and before recovery).

In 2006, the previous owner collared an exploration adit and excavated 570 linear feet of 12 foot x12 foot exploration drifts and crosscuts. These headings intercepted three parallel veins of high-grade antimony containing gold as a secondary metal

The adit, collared near the bottom of a hillside, connects to the antimony/gold vein structures via horizontal headings sufficiently large to provide access for modern mobile underground equipment. We anticipate that the exploration drifts and crosscuts can be extended to provide immediate access to multiple ore faces. In the first half of 2027, we plan to demonstrate that the site has the capability to fully meet our Radersburg, Montana name plate mill feed capacity using long hole open stope mining methods. Our contractor's personnel have previous experience in utilizing mechanized longhole mining methods for production from narrow vein deposits.

Earlier this year, the company hosted pre-bid underground site inspection tours by two internationally recognized mining contractors in preparation for their submission of tenders in mid-August, for underground development and mining of this high-grade material. One third party contractor was selected, and mining operations began this month with an excavation of an exploration bulk sample of approximately 1,000 tons. Our third-party contractor has mobilized equipment and personnel to the site and with the goal of having their crews operating two shifts daily by the end of October.

Additionally, USAC has engaged an experienced underground mining geologist to work on site to map the geology and assist in minimizing dilution of this high-grade antimony/gold resource.

USAC has recently contracted a local Alaskan transportation company to deliver the bulk sample to our floatation mill facility located in Radersburg, Montana. The intention is to verify the overall economics and practicality of producing antimony trisulphide meeting military specifications and to satisfy other existing antimony market demands in 2027.

Commenting on this announcement today, Mr. Gary C. Evans, Chairman and CEO of USAC, stated, "This is another example of USAC's "fast track" approach to mining methods. Having only acquired this property earlier this year, and operating in a weather environment that is difficult at best, we will be moving approximately 1,000 tons of lode ore (antimony and gold) from the underground mine for processing to our in-house flotation mill located in Radersburg, Montana, in preparation for sales during the months of November and December this year. This shipment will represent our first antimony delivered from our exploration efforts in Alaska to Montana for processing."

Commenting further on the Nolan Creek activities, Mr. Joseph Bardswich, P.E., Executive Vice President and Chief Mining Engineer, stated "We were very fortunate to have acquired this quality of a property earlier this year at such a nominal price. We were successful at solving prior existing environmental issues, acquiring additional leases around the prospect, making repairs on a 7 mile road owned by the state in an effort to make it usable, acquiring and moving to the site a "man camp, contracting an experienced mining contracting firm who are already underground performing mining operations today, negotiating the transport of material to Montana during the middle of winter, with all of this done in less than 12 months! These actions are representative of the quality and perseverance of the personnel that US Antimony has attracted within our organization."

About USAC:

United States Antimony Corporation and its subsidiaries in the U.S., Mexico, and Canada ("USAC," "U.S. Antimony," the "Company," "Our," "Us," or "We") sell antimony, zeolite, and precious metals primarily in the U.S., Mexico, and Canada. The Company mines, purchases, and processes ore primarily into antimony oxide, antimony metal, antimony trisulfide, and precious metals at its facilities located in Montana and Mexico. Antimony oxide is used to form a flame-retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, as a color fastener in paint, and as a phosphorescent agent in fluorescent light bulbs. Antimony metal is used in bearings, storage batteries, and ordnance. Antimony trisulfide is used as a primer in ammunition. The Company also recovers precious metals, primarily gold and silver, at its Montana facility from third party ore. At its Bear River Zeolite ("BRZ") facility located in Idaho, the Company mines and processes zeolite, a group of industrial minerals used in water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other miscellaneous applications. Beginning in 2024 and continuing in 2025, the Company acquired mining claims, real properties (patented claims) and leases located in Alaska, Montana, and Ontario, Canada in an effort to reduce the cost of third-party antimony ore purchases and to expand its product offerings.

Learn more about United States Antimony Corporation at www.usantimony.com.

Forward-Looking Statements:

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including, without limitation, statements regarding the Company's future operations, production levels, financial performance, business strategy, market conditions, demand for antimony, zeolite, other critical minerals, and precious metals, expected costs, and other statements that are not historical facts. These statements are based on current expectations, estimates, forecasts, and projections about the industries in which the Company operates, as well as management's beliefs and assumptions. Words such as "anticipates," "expects," "intends," "plans," "believes," "seeks," "estimates," "may," "will," "should," "could," and variations of these words or similar expressions are intended to identify such forward-looking statements.

Forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those indicated in such statements, including, but not limited to: fluctuations in the market prices and demand for antimony and zeolite; changes in domestic and global economic conditions; operational risks inherent in mining and mineral processing; geological or metallurgical conditions; availability and cost of energy, equipment, transportation, and labor; the Company's ability to maintain or obtain permits, licenses, and regulatory approvals; changes in environmental and mining laws or regulations; competitive factors; the impact of geopolitical developments; and the effects of weather, natural disasters, or health pandemics on operations and supply chains. Additional information regarding risk factors that could cause actual results to differ materially is included in the Company's filings with the U.S. Securities and Exchange Commission, including its Annual Report on Form 10-K and Quarterly Reports on Form 10-Q.

The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof.

Investor Relations Contact:		Media Relations Contact:
Jonathan Miller, VP, Investor Relations		Anthony D. Andora
4438 W. Lovers Lane, Unit 100		Edge Consulting, Inc.
Dallas, Texas 75209		1560 Market Street, Ste. 701
E-Mail: Jmiller@usantimony.com		Denver, Colorado 80202
Phone: 406-606-4117		E-Mail: Anthony@EdgeConsultingSolutions.com
		Phone: 720-317-8927

SOURCE: United States Antimony Corp.

View the original press release on ACCESS Newswire

FAQ

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What resource values does United States Antimony report for Nolan Creek?

Nolan Creek's measured and indicated resources have stated in-situ values of $233.9M for contained antimony and $79.9M for contained gold. These values are before mining, transporting and processing costs and before recovery; they are not proceeds from sales.

When does UAMY plan to process Nolan Creek's bulk sample and demonstrate mill supply?

USAC plans to move approximately 1,000 tons to its Radersburg mill for processing in preparation for sales during November and December 2026. In the first half of 2027, the company plans to demonstrate that Nolan Creek can fully meet the mill's rated feed capacity.

What metal prices is UAMY using to assess Nolan Creek's economic potential?

USAC is using $4,000/oz for gold and $8.30/lb for antimony when considering Nolan Creek's economic potential.

Which Nolan Creek resources will UAMY target after bulk sampling?

Phase 2 will continue targeting measured and indicated material, which the existing exploration drift intersects. All currently planned operations are within the lode claims. USAC plans to use long hole open stope mining methods for its first-half 2027 supply demonstration.