American Rare Earths Ltd. has announced promising results from an extensive leach testing program at the Cowboy State Mine, part of the Halleck Creek Rare Earths Project in Wyoming, USA. The tests, conducted at SGS's laboratory in Lakefield, Ontario, revealed high leach recoveries for light rare earths, including 85% for praseodymium and 84% for neodymium, under optimal conditions. Additionally, encouraging recoveries were noted for heavy rare earths, such as terbium at 52% and dysprosium at 46%. The project also reported significantly lower concentrations of iron and aluminum impurities compared to previous tests. Atmospheric tank leaching was selected as the preferred method due to its efficiency and cost-effectiveness. These results mark a significant milestone in the project's technical de-risking, providing crucial data for the ongoing Pre-Feasibility Study and potential production of rare earth magnet oxides.