BRZ Project First Mineral Reserve Report

DALLAS, TX – United States Antimony Corporation (USAC) announced the final completion of its first mineral reserve technical report on its zeolite deposit located in Preston, Idaho. The zeolite division is run under a wholly-owned subsidiary with the name of Bear River Zeolite Company (BRZ).
Commercial mining of zeolite at the location commenced in 2001, 24 years ago, and has proven historically to be feasible year-round. The BRZ property is located in Franklin County Idaho, approximately seven miles east of Preston, Idaho and approximately 100 miles north of Salt Lake City, Utah.
The BRZ zeolite project is situated on a combination of federal unpatented placer mining claims administered by the U.S. Bureau of Land Management (BLM) and privately owned leased lands. The property comprises 50 contiguous unpatented federal placer claims, each representing approximately 20 acres, covering a total of approximately 994 acres. In addition, BRZ holds a long-term lease agreement (minimum of 10 years with automatic renewals) with a private company representing family interests in the area. This lease covers approximately 320 acres of private land. Operations to-date have been conducted exclusively on the leased lands.
After new management took over USAC several years ago, in June 2024, a drilling contractor was commissioned to conduct a drilling program using a percussion rock drill equipped with a hydraulically powered dust collection system. The rig drilled 82 vertical holes with a diameter of 3.5 inches, reaching a maximum depth of 84 feet each. Of these attempts, 80 holes were successfully completed, totaling 6,713 feet of drilling. The drill holes were spaced approximately 100 feet apart.
As of May 22, 2024, the BRZ Project is estimated to contain the following in-situ Mineral Reserve, reported above a cutoff grade of 100 meq/100g CEC (Cation Exchange Capacity). These estimates are based on validated drill data and block modeling of zeolite-bearing tuffs, incorporating all drilling, sampling, and technical data available. At current average annual production rates, the Proven and Probable Reserve could theoretically support operations for more than 400 years. This extended mine life reflects the modest scale of current throughput relative to the size of the reserve. Should production be scaled up significantly – e.g., by a factor of 20 – the Reserve would still support operations for over 20 years, demonstrating the project’s flexibility and longevity under a range of development scenarios.
Gary C. Evans, Chairman and Chief Executive Officer, said, “Over the last several years, BRZ has undergone a significant transformation. We immediately brought on new highly qualified management, spent over $3.5 million repairing a severely broken-down facility, drilled a large number of test holes to confirm a reserve base on the active portion of our property, renegotiated our existing mining lease, increased sales prices and volumes, and recently added two new qualified sales personnel specialized in water filtration and cattle feed. The financial results reported in the first quarter of this year began reflecting these significant changes. These improvements should continue reflecting positive financial and operational results in future quarters. We are confident that we can double our existing sales to both existing and new customers with little, if any, additional capital expenditures. A significant portion of the zeolite deposit located on our property has been determined by our third-party consulting engineers to have a reserve life of 400+ years. Additionally, we believe it is the highest quality zeolite found anywhere in the world. Now we need to significantly increase sales volumes in order to maximize the benefits of this long reserve life. All the ingredients are now in place to begin accomplishing that goal.”