Kaycee ISR Uranium Project Mineralization Expansion

TORONTO – Premier American Uranium Inc. (PUR) reported on the Kaycee ISR Uranium Project located in the prolific Powder River Basin (PRB) of northeastern Wyoming. The 2025 drilling campaign successfully advanced multiple targets, expanding areas of known uranium mineralization in the Outpost, Rustler, and Stampede exploration areas, each associated with major redox-controlled roll-front systems within the PRB.
Drilling completed in 2025 includes 132 drillholes for a total of 100,107 ft. Follow-up drilling in the Outpost target area during 2025 has confirmed the presence of a newly defined uranium-bearing roll front system within Fort Union Formation channel sands. The discovery builds upon positive drilling results from the late-2024 drilling program. Careful and astute field observations by the Company’s geologists resulted in the recognition of remnant uranium mineralization in up-dip exposures along the Pine Ridge escarpment and its relationship to more robust mineralization down-dip, at the Outpost target area with the following results: 1) Eleven of the 23 holes encountered uranium mineralization. 2) Eight of the 11 mineralized holes encountered grades of 0.02% eU₃O₈ or greater with a thickness of at least 2 ft, including 3.5 ft of 0.27% eU₃O₈ in drillhole LT25-065 and 5.5 ft of 0.125% eU₃O₈ in drillhole LT25-069. Drilling in the Rustler area further defined a previously identified north-south trending redox-front with associated uranium mineralization hosted in Wasatch Formation channel sands. This 3.5-mile corridor represents one of the most laterally continuous redox interfaces in the project area, with the following results: 1) Twenty-two of the total 81 holes drilled in the Rustler area in 2025 encountered uranium mineralization. 2) Fifteen of the 22 mineralized holes encountered grades of 0.02% eU₃O₈ or greater with a thickness of at least 2 ft, including 8.5 ft of 0.083% eU₃O₈ in drillhole RT25-042 and 4 ft of 0.09% eU₃O₈ in drillhole RT25-064. The mineralized holes confirm the continuity of previously identified mineralization and are believed to demonstrate favourable host-sand characteristics and geologic characteristics similar to the nearby Nichols Ranch ISR uranium project of Energy Fuels Inc. less than five miles to the east. Mineralized intercepts encountered in the Stampede area during 2025 drilling demonstrate continuity of the Wasatch-hosted redox trend between Stampede and Rustler, indicating that uranium mineralization extends along a broad north–south corridor. This finding strengthens the regional model for roll-front development and supports ongoing exploration targeting underexplored segments of the redox trend.
Colin Healey, CEO, said, “We are highly encouraged with the results of the 2025 drilling program at Kaycee, which validated our thesis that the Project offers resource potential in a top U.S. uranium producing jurisdiction. The program delivered a substantial number of holes with grades and thicknesses exceeding those typically necessary for incorporation into a mineral resource estimate, which we believe is very positive and bodes well for our 2026 exploration plans at Kaycee which are in the final planning stages. Goals for 2026 at include aggressive follow-up on newly identified and known mineralized areas to determine resource potential and formally confirming historical resources at the Project, while also testing high-priority targets born from recent drill work. PUR continues to establish a track record of successful consolidation of quality projects and rapidly demonstrating further value in the expanding portfolio. I congratulate our growing team on our successes portfolio wide.”