• Pilot plant program structured in three stages: milling, mineral separation, and oxide refining
• Front-end processing in Wyoming, downstream refining at Saskatchewan Research Council
• Leveraging existing facilities and expertise to accelerate timeline to pre-production REE oxide

American Rare Earths (ASX: ARR) has announced the next stage in its accelerated pilot plant program for the American Rare Earths Halleck Creek Project in Wyoming. The pilot plant program will be structured in three stages: milling and sizing; mineral separation and concentration; and leaching, impurity removal and oxide refining. The first two stages will be undertaken in Wyoming, with milling and sizing at Western Research Institute in Laramie, and mineral separation and concentration at DISA's facilities in Casper, using DISA's patented High-Pressure Slurry Ablation (HPSA) technology. The final stage of the pilot plant program will be undertaken by the Saskatchewan Research Council (SRC) in Saskatoon, where the mineral concentrate generated in Wyoming will be processed through leaching, impurity removal and oxide refining to produce high purity separated rare earth oxide. By combining Wyoming-based front-end processing with proven downstream refining infrastructure, ARR expects to materially shorten the timeline to produce pre-production rare earth oxide, validate the broader process flowsheet and generate material for downstream evaluation and strategic engagement.

The Company believes this staged pilot approach materially de-risks execution by using available facilities, specialized operators and installed or ordered equipment, while preserving the strategic objective of developing a full Wyoming-based rare earth project over time.