Myriad Uranium Corp. announced on September 22, 2026, the results of an initial testing campaign conducted by DISA Uranium™ Corporation on samples from the Copper Mountain deposit in Wyoming. The data are compelling: HPSA™ (High-Pressure Slurry Ablation) technology successfully concentrates between 83.9% and 90.6% of the uranium present in the treated material, while simultaneously reducing by 70% the volume of rock requiring further processing.
The HPSA™ process works by colliding two high-pressure streams of mineral slurry. Particles are driven at high velocity into a collision chamber, where they fracture along the natural grain boundaries of the crystal lattice — liberating ore minerals from waste rock and allowing their recovery in the fine fraction. Samples were collected at different time intervals to measure the progressive increase in liberation and recovery. At the first interval, 83.9% of the uranium was concentrated into 29.3% of the total mass. At the second interval, this rose to 90.6% within a fraction representing 37.5% of the mass. At the same time, uranium concentration in the residual coarse fraction dropped by between 74.5% and 87.9%, and Ra-226 and Th-230 activity levels fell by 78.8% and 83.5% respectively.
The tests used approximately 50 kg of material sampled during the 2024 drilling campaign at the Canning deposit, selected randomly and without targeting specific intervals or lithological types. The bulk of the material was representative of the primary host granite. This makes the results especially meaningful: no preferential selection was applied, and the process delivered strong performance regardless. DISA Uranium developed the HPSA™ technology in partnership with IsoEnergy and with support from other uranium industry operators.
Copper Mountain is a wholly owned Myriad project with a well-established production history. The deposit hosts multiple historical ore zones and previously producing mines, including the Arrowhead mine, which yielded approximately 500,000 pounds of U₃O₈. Adding further weight to this track record is a 1976 dataset: leach tests conducted by Hazen Research on behalf of Union Pacific already demonstrated uranium recoveries exceeding 92% — and above 96% in most samples — using dilute sulfuric acid leaching. Combining that technique with HPSA™ pre-concentration could substantially reduce overall beneficiation costs.
Laboratory tests represent an early stage, and Myriad is clear-eyed about that. But the numbers hold up even on an unselected sample set, which lends credibility to the technical case. With a Phase II drilling campaign currently underway at Copper Mountain, the company is in a position where deposit expansion and metallurgical refinement are advancing in tandem. Should the HPSA™ results be confirmed at larger scale, the project could enter the market with a competitive cost profile at a time when uranium demand continues to grow.
