Core Silver Intersects High-Grade Copper-Molybdenum Veins up to 7.31% Cu & 1.01% Mo Confirming Large Porphyry System at Laverdiere

Executive Summary

• Core Silver reported extensive 2025 diamond drilling results from the Laverdiere Copper Project, confirming a large Cu‑Mo‑Ag‑Au porphyry system extending >5 km laterally and to depths >800 m, with multiple high‑grade intercepts (e.g., 7.31% Cu, 1.01% Mo, 46.3 g/t Ag).
• The Silver Lime Polymetallic Project’s Jackie target yielded several high‑grade silver–lead–zinc intervals (up to 44.1 g/t Ag, 2.2 % Pb, 2.7 % Zn) and notable surface sulphide grades (>1 kg/t Ag).
• A total of seven drill holes (3,857 m) were completed at Laverdiere and three holes (564 m) at Jackie, expanding the known mineralized corridor and indicating the system remains open at depth and along strike.

Key Details

• Laverdiere Copper Project – 2025 Highlights
• Hole LAV22‑001: 48.50 m @ 0.90% Cu, 6 g/t Ag, 0.11 g/t Au (31.46 m depth); includes 96 m @ 0.47% Cu from surface.
• Hole LAV25‑010: Multiple high‑grade intervals, e.g., 0.50 m @ 1.97% Cu, 45.9 g/t Ag, 0.32 g/t Au (444.75 m depth).
• Hole LAV25‑011: 0.35 m @ 7.31% Cu, 1.01% Mo (1.68% MoS₂), 46.3 g/t Ag, 0.14 g/t Au (603.80 m depth).
• Hole LAV25‑012: 10.40 m @ 0.06% Mo (0.09% MoS₂) from 570.50 m; includes 5.25 m @ 0.14% Mo (0.23% MoS₂).
• Hole LAV25‑013: 22 m @ 0.02% Mo (0.03% MoS₂) from 398 m; includes 1 m @ 0.34% Mo (0.56% MoS₂), 660 ppm Cu.

• Total drilling: 7 holes, 3,857.17 m across five locations; mineralization delineated over 5.2 km strike and >800 m depth.

• Silver Lime Polymetallic Project – Jackie Target Highlights

• Hole SLM25‑067: 6.00 m @ 14.1 g/t Ag, 0.7% Pb, 0.6% Zn, 0.018 g/t Au; includes 2.75 m @ 26.3 g/t Ag, 1.3% Pb, 1.2% Zn, 0.020 g/t Au.
• Hole SLM25‑067: 1.40 m @ 31.7 g/t Ag, 2.0% Pb, 1.6% Zn, 0.024 g/t Au (188.95 m depth).
• Hole SLM25‑067: 0.30 m @ 44.1 g/t Ag, 2.2% Pb, 2.7% Zn, 0.017 g/t Au (32.35 m depth).
• Hole SLM25‑068: 1.90 m @ 42.5 g/t Ag, 0.1% Pb, 0.6% Zn, 0.013 g/t Au (44.40 m depth).

• Total drilling: 3 holes, 564.05 m; confirms high‑grade silver‑rich carbonate replacement and vein-hosted polymetallic mineralization.

• Soil Geochemistry – Laverdiere

• 231 soil samples collected over a 1.4 km × 5.6 km grid.

• Notable anomalies: 78 samples >10 ppm Mo (2 > 100 ppm), 102 samples >30 ppm Cu (11 > 150 ppm).

• Technical Verification

• All drill core and rock samples processed by Bureau Veritas Labs with QA/QC protocols (blanks, standards, duplicates).
• Re‑analysis of select sections underway; not expected to materially affect reported grades.

Notable Quotes

• “The presence of widespread copper‑molybdenum mineralization and high‑grade porphyry veins across multiple holes confirms that we are exploring a large and robust porphyry system… Laverdiere has the potential to develop into a significant new copper discovery.” – Nick Rodway, President & CEO
• “The 2025 drilling at Jackie confirms that silver mineralization extends below surface and across multiple structural trends, expanding the footprint of the system.” – Nick Rodway, President & CEO