Critical One Energy Geophysical Interpretation Identifies Significant Extension Potential to Howells Lake Antimony-Gold Mineralization

Executive Summary

• Advanced VTEM airborne magnetic and electromagnetic survey modeling identifies at least a 2 km westward extension of antimony‑gold mineralization at the Howells Lake Project.
• Historical drill intercepts (up to 4.7% Sb and 25.5 g/t Au) are supported by newly modeled EM conductors that also extend northeast and at depth (>300 m).
• The company plans a fully funded follow‑up drilling program to test the expanded targets.

Key Details

• VTEM survey interpretation reveals:
• West‑striking, north‑dipping mineralized zone with stibnite, pyrite, pyrrhotite and brecciated graphite extending ≥2 km west of historic drill holes.
• EM anomalies also extend northeast and at depth (>300 m) along a magnetic low structural corridor spanning >8 km of the claim set.
• New EM conductors lie beneath historic east and west zones, indicating lateral extension of known antimony‑gold mineralization.
• Historical drilling highlights (for context):
• Hole W‑79‑2: 4.7% Sb & 25.5 g/t Au over 1.43 m (Howells Lake West Zone).
• Hole MC‑V3‑79‑22: 75% Sb within a 5.37% Sb interval over 8.35 m (East Zone).
• Hole MC‑V3‑79‑11: 1.18% Sb over 5.8 m.
• Geological interpretation:
• Mineralization controlled by late west‑striking, north‑dipping altered stratigraphy and fault zones on the margins of a feldspar porphyry.
• EM anomalies suggest favorable stratigraphy outside historic V‑3 deposit and potential additional porphyries hosting ore‑forming fluids.
• Project scale:
• Historical resource of 1.7 Mt at 1.4% Sb with associated Au (non‑NI 43‑101 compliant).
• Resource estimate predates NI 43‑101; re‑evaluation required for compliance.
• Forward‑looking actions:
• Ongoing geological and geophysical data review.
• Advancement of exploration plans for follow‑up drilling to delineate and expand antimony‑gold deposits (referencing prior releases Aug 28 2025 & Sep 4 2025).

Notable Quotes

“These interpretive results validate our understanding of the potential of Howells Lake to be a cornerstone asset with exceptional antimony and gold exploration and development potential.” – Duane Parnham, Founder, Executive Chairman & CEO, Critical One Energy Inc.