ESGold's Integrated 3D Geological Model Identifies Deep, Expanding Mineralized Corridor at Montauban, Supporting District-Scale Exploration Potential

Executive Summary

• ESGold completed and delivered a comprehensive Ambient Noise Tomography (ANT)‑based 3‑D geological model for the Montauban Project, revealing mineralized architecture to ~900 m depth and >2 km of strike.
• The model shows that mineralized trends remain open beyond current survey limits, indicating significant upside potential and a shift from a historically constrained footprint to a district‑scale system.
• ESGold will expand ANT coverage and commence a step‑out diamond drilling program in early Spring 2026 to test high‑priority targets identified by the model, advancing exploration in parallel with its 2026 production timeline.

Key Details

• Model Scope & Provider: Produced by Geomatic World Inc. (with CAUR Technologies) using ANT seismic velocity data; integrates geophysical, geological, structural and geochemical datasets.
• Depth Extension: Mineralized corridors imaged to ~900 m depth – substantially deeper than historic drilling (max ~250 m).
• Strike Length: At least 2 km of strike identified within the current ANT survey area; mineralization appears to widen with depth.
• Open‑Ended Targets: Trends are truncated by the limits of existing ANT coverage, suggesting continuation beyond surveyed area both laterally and at depth.
• Structural Controls: Dominant NNW‑ and NE‑trending structures interpreted as primary controls on hydrothermal fluid flow, analogous to large polymetallic VHMS systems.
• Next Exploration Steps:
• Expand ANT survey to assess full extent of the corridor.
• Integrate additional geophysical datasets for refined targeting.
• Develop a step‑out diamond drilling program aimed at high‑priority targets from the model.
• Targeted drilling slated for early Spring 2026, subject to permitting and logistics.
• Production Context: Exploration activities are planned to run alongside Montauban’s near‑term tailings production ramp‑up scheduled for 2026, allowing any new mineralization to be potentially incorporated into mine plans.
• Qualified Person: André Gauthier, P.Geo., Director of ESGold and Qualified Person (NI 43‑101), reviewed and approved the technical content.

Notable Quotes

“This is the most important technical milestone in ESGold's history…the scale indicated by this work is beyond what we had originally envisioned, and it reinforces our conviction that Montauban has the potential to evolve into a much larger mineral system.” – Gordon Robb, CEO

“The ANT and 3D geological modeling provide a coherent, technically robust framework…The priority now is to validate these interpretations through expanded geophysics and targeted drilling.” – André Gauthier, Director & Senior Consulting Geologist