Positive Aquifer Test Results Support Lo Herma ISR Pathway

• Positive aquifer test supports ISR development pathway
• Sustained pumping rate supports Scoping Study design
• Confinement results support ISR operations
• Key inputs delivered for Lo Herma Scoping Study

American Uranium Ltd. has reported positive results from a large-scale aquifer pumping test at its Lo Herma ISR Uranium Project in Wyoming's Powder River Basin. The test, conducted at Mine Unit 1, demonstrated hydraulic communication through the proposed production aquifer, sustained pumping, and confinement supportive of in-situ recovery (ISR) based production. The well sustained a pump-limited 19.2 gpm for 48 hours, with drawdown stabilizing at approximately 16.9 feet. The results provide project-specific hydrogeological inputs for the planned Lo Herma Scoping Study base case, with further testing and groundwater baseline work planned to support wellfield optimization and future permitting.