Mineral Resource Estimate Updated for the Cowboy State Mine Area at Halleck Creek

Core Insights - American Rare Earths (ARR) announced an updated Mineral Resource Estimate for the Cowboy State Mine area, increasing the estimate to approximately 547.5 million tonnes with a TREO cut-off grade of 1,000 ppm [2][3] - The update includes results from 102 channel samples collected in 2025, which allowed for the reclassification of approximately 63.9 million tonnes from inferred to indicated resources [3][8] - The company has secured two new exploration drilling permits, allowing for further drilling and sampling to support future geological data collection [5][19] Mineral Resource Update - The updated mineral resource estimate for the Cowboy State Mine area is approximately 547.5 million tonnes, with an increase of about 4.5 million tonnes due to additional mapping and channel sampling [3][8] - The channel samples collected in 2025 returned an average TREO grade of 5,471 ppm, with a standout sample showing a record high grade of 13,816 ppm [7][14] - The reclassification of resources enhances the potential for near-surface resources to be incorporated into mine plans for the pre-feasibility study [6][19] Drilling Permits and Future Plans - In October 2025, ARR received permits for 27 drill hole locations in the Cowboy State Mine area and 29 in the Bluegrass area, which could add significant tonnage to the Halleck Creek's current resource estimate of 2.6 billion tonnes [5][23] - The drilling aims to increase geological confidence levels and define substantial measured resources within the proposed pits [19][21] - The company is working on optimizing drilling access routes and plans to commence drilling by mid-next year [21][23] Strategic Importance - The Halleck Creek Project is positioned to reduce U.S. reliance on rare earth imports, particularly from China, while meeting the growing demand for critical minerals [28][29] - The project is committed to environmentally responsible mining practices and collaborates with U.S. Government-supported R&D programs for innovative extraction technologies [29]