Vanguard Mining Plans Phase 2 Drilling of Up to 7 Holes (2,800 m) at Redonda Copper-Molybdenum Project

Executive Summary

• Vanguard Mining Corp. announces the planning of a follow-up Phase 2 Drill and Exploration program at its 100%-owned Redonda Copper-Molybdenum Project in British Columbia, designed to build upon recent encouraging results.
• The release details significant 2025 Phase 1 drill results, specifically Hole 25-01, which intersected extensive copper-molybdenum mineralization over 510.74 meters, effectively doubling the length of higher-grade mineralization compared to 2023 drilling and confirming the system remains open at depth.
• The upcoming Phase 2 program includes reconnaissance-scale IP surveying, up to seven diamond drill holes totaling ~2,800 meters, and detailed geological mapping to test extensions of known mineralization and evaluate new targets.

Key Details

• Phase 2 Program Scope:
  • Fully permitted follow-up program at the Redonda Project.
  • Includes reconnaissance-scale Induced Polarization (IP) surveying to vector toward higher-grade zones.
  • Drilling of up to seven (7) diamond drill holes totaling approximately 2,800 meters.
  • Targeting the southeast portion of the Project between and beyond historical TECK drill holes.
  • Detailed geological mapping and prospecting in the north and west within the megabreccia zone.
  • Evaluation of rhenium as a potential by-product associated with molybdenite mineralization.
• 2025 Phase 1 Drill Results (Hole 25-01):
  • Drilled at a dip of -65°; total depth of 510.74 meters.
  • Interval 1: 3.05 m to 29.12 m (27.07 m interval) weighted average of 0.3252% Cu and 78 ppm Mo.
  • Interval 2: 37.65 m to 387.70 m (350.05 m interval) weighted average of 0.244% Cu and 112 ppm Mo.
  • Overall Hole Average: 0.1801% Cu and 86 ppm Mo over the full 510.74 m length.
  • Mineralization extends the higher-grade zone by an additional 199.05 meters, more than doubling the length of higher-grade mineralization intersected in 2023 drilling.
  • Lower-grade mineralization continues beyond the end of the hole, indicating the system is open at depth.
• 2025 Phase 1 Drill Results (Hole 25-02):
  • Drilled vertically, located ~30 meters east of 2023 drilling.
  • Interval: 3.05 m to 132.00 m (129.26 m interval) weighted average of 0.1344% Cu and 128 ppm Mo.
• Historical Context:
  • Historical drilling by Stamper Oil & Gas Corp. intersected intervals up to 142.6 meters grading 0.279% Cu and 0.0281% Mo.
  • Surface sampling returned near-surface intervals of 3.1 to 48 meters grading up to 0.529% CuEq (based on historical assumptions not verified by Vanguard).
• Operational & Community Details:
  • Field logistics will utilize an expanded exploration camp or a floating logging camp.
  • Collaboration with Klahoose First Nation is prioritized, including local labor, training, and use of Klahoose-owned service providers.
  • Permits secured include a Drill Permit, IP Exemption, and Free Use Permit; consultation with Homalko First Nation concluded with a permit issued for additional drill sites.
• Technical & QA/QC:
  • Samples analyzed by ALS Canada Ltd. using four-acid digestion with ICP-MS (ME-MS61) and ICP-AES (Cu-OG62) for over-limit values.
  • Qualified Person: J. T. Shearer, M.Sc., D.I.C., P.Geo.

Notable Quotes

• David Greenway, CEO: “The planned Phase 2 drill program is a key next step in advancing the Redonda Project following the strong results from our 2025 campaign. Drilling significantly expanded the copper-molybdenum mineralized system beyond the 2023 footprint, reinforcing our confidence in its continuity and scale. With permits secured and multiple priority targets defined, we are well positioned to continue advancing Redonda through further drilling in 2026 and unlocking its longer-term potential.”