• Rare earth oxides were produced from Halleck Creek ore using the updated preliminary Pre-Feasibility Study ('PFS') mineral processing flowsheet
• A Mixed Rare Earth Oxalate and Mixed Rare Earth Oxide was created from purified leachate solution
• This is the most significant technical milestone achieved for the Project to date

American Rare Earths (ASX: ARR | OTCQX: ARRNF | ADR: AMRRY) ('ARR' or the 'Company') has successfully completed another critical stage in its mineral processing program by producing a mixed rare earths oxide ('MREO') using the updated preliminary PFS mineral processing flowsheet. MREO from Halleck Creek ('the Project') was produced using the material - a pregnant leach solution ('PLS') - from the impurity removal testing campaign. This was achieved through precipitating a mixed rare earth oxalate and then creating MREO powder. This major technical milestone confirms that rare earths can be extracted into metallic oxides from Halleck Creek ore using the updated preliminary PFS mineral processing flowsheet currently being finalized for the upcoming PFS. Solvent extraction computer simulation is now underway, using the results of these tests. Producing a MREO from Halleck Creek ore, using the updated preliminary PFS mineral processing flowsheet, is the most significant technical milestone achieved for the Project to date. MREO is the precursor used to produce individually separated rare earth products through solvent extraction, such as Neodymium-Praseodymium ('NdPr'), Terbium ('Tb'), and Dysprosium ('Dy'). Next steps include solvent extraction simulation, process optimization using bulk samples, and completing a single pass-through mineral processing flowsheet to replicate and validate all hydrometallurgical test results completed to date.