Core Silver Extends Mineralization by 300M at the Laverdiere Copper Project

Executive Summary

• Core Silver released visual and geological highlights from drill hole LAV25‑011, the second of four deep diamond holes completed in the 2025 season at the Laverdiere Copper Project.
• Hole LAV25‑011 extended the known Cu‑Mo‑Ag porphyry system by ~300 m, increasing the step‑out distance to approximately 2.1 km and confirming continuity of steeply dipping mineralized veins to a final depth of 800 m.
• The hole intersected broad intervals of copper‑molybdenum‑silver mineralization from surface to >725 m depth, with coarse‑grained quartz veins up to 40 cm thick below 550 m and clear zonation from Mo‑Ag‑dominant upper zones to Cu‑Mo‑Ag‑rich lower zones, indicating proximity to a larger porphyry centre that remains open in all directions.

Key Details

• Drill Program Overview: 7 holes across five target areas, total 3,857 m drilled (2025 season).
• Hole LAV25‑011 Specifics:
• Collared on same pad as LAV25‑010; drilled southward to test continuity of steeply dipping veins.
• Final depth: 800 m (surface to >725 m intersected mineralization).
• Extended porphyry system by 300 m, increasing step‑out from 1.8 km to ~2.1 km.
• Intersected quartz veins up to 40 cm thick below 550 m depth, hosting coarse‑grained copper and molybdenum mineralization.
• Mineralogical zonation: Upper levels Mo‑Ag dominant; below 350 m increasingly Cu‑Mo‑Ag rich.
• Geological Interpretation: Hole LAV25‑011 intersected an upper marginal zone proximal to a large multi‑phase Cu‑Mo‑Ag porphyry centre; system remains open laterally and at depth.
• Assay Status: All samples from LAV25‑011 (and other 2025 holes) are pending assay results.
• Table of 2025 Drill Holes (selected):

• Historical Context: Prior drilling (2022) returned up to 48.5 m of 0.90 % Cu, 6 g/t Ag, 0.11 g/t Au; historic adits reported up to 27 m grading 1.20 % Cu.
• CEO Comment: “Hole LAV25‑011 has delivered one of the strongest indications to‑date that Laverdiere holds the potential for hosting a large porphyry system… our technical confidence in the scale and continuity of this system continues to grow.”

Notable Quotes

“Extending mineralization by another 300 metres and observing consistent Cu‑Mo‑Ag zonation patterns we're now seeing across multiple holes, reinforces our view that we are vectoring toward a robust porphyry centre that remains open in all directions.” – Nick Rodway, President & CEO

Materiality Assessment: Material – Positive (the drill results materially expand the known extent of the porphyry system and enhance the project's exploration potential).