ISOENERGY AND PUREPOINT INTERSECT UP TO 8.1% U3O8 AT DORADO PROJECT

Executive Summary

• IsoEnergy Ltd. and Purepoint Uranium announced partial assay results from the 2025 summer drill program at their 50/50 Dorado JV, highlighting a high‑grade intercept of 0.4 m @ 8.1% U₃O₈ in hole PG25-07A.
• The program completed 5,030 m across 11 holes before wildfires forced an early shutdown; follow‑up drilling is planned for early 2026 pending full assay and geophysical interpretation.
• Additional drilling at the Serin and Turaco targets provided valuable geophysical calibration data, while the Celeste project drill program was deferred due to wildfire risk.

Key Details

• Hole PG25-07A (Nova Discovery Zone) – 2.1 m @ 1.62% U₃O₈ overall; includes:
• 0.4 m @ 8.13% U₃O₈ (core width) from 386.0‑386.4 m depth.
• 4.9 m @ 0.52% U₃O₈ from 391.8‑396.7 m, including:
  • 0.3 m @ 2.47% U₃O₈ (392.6‑392.9 m)
  • 0.4 m @ 2.92% U₃O₈ (394.5‑394.9 m)
• Previously Reported Intercepts (for context):
• PG25-04: 0.6 m @ 0.96% U₃O₈; 0.4 m @ 0.15% U₃O₈.
• PG25‑05: 1.0 m @ 2.19% U₃O₈; includes 0.3 m @ 5.38% U₃O₈ and 0.3 m @ 0.10% U₃O₈.
• Turac​o Grid Drilling: Two holes (TUR25‑01 & TUR25‑02) – total 832 m; no anomalous radioactivity encountered; highest downhole gamma count 578 cps, data to calibrate geophysical model.
• Serin Grid Drilling: Two holes (SL25‑10 & SL25‑11) – total 1,032 m; SL25‑11 intersected a 6‑m chloritized pegmatite with up to 1,200 cps gamma count, providing structural insight.
• Program Scope: Planned 5,400 m; actual 5,030 m completed before wildfires curtailed field operations and forced deferral of Celeste project drilling.
• Next Steps: Await full suite of geochemical assays and structural interpretations; plan follow‑up drilling in early 2026 to expand Nova zone and test additional corridors across Dorado property.
• Technical Details: Core samples analyzed by Saskatchewan Research Council (SRC) labs using ICP‑OES after total digestion; results reported as U₃O₈% derived from Ut ppm (conversion factor 1.17924/10,000).

Notable Quotes

“Eight percent uranium is an excellent grade from the centre of the very strong radioactive interval drilled by hole 7A,” said Chris Frostad, President and CEO of Purepoint Uranium. “These assays reinforce the strength of this newly discovered system and provide a solid anchor point as we continue to test the mineralized structure in all directions.”