Vanguard Mining to reassay Redonda drill core

Executive Summary

• Vanguard Mining Corp. announced plans to undertake a re-assay program for its Redonda Copper-Molybdenum Project in British Columbia, utilizing industry-standard multielement analytical methods (four-acid digestion with ICP-MS and ICP-AES) to evaluate gold, copper, silver, rare earths, and other associated elements.
• The company outlined its Phase 2 drill program for 2026, which is fully permitted and designed to build on recent encouraging results. The program includes reconnaissance-scale induced polarization (IP) surveying, detailed geological mapping, and drilling of up to seven diamond drill holes totaling approximately 2,800 meters.
• The Phase 2 drilling targets the southeast portion of the project, aiming to test extensions of known copper-molybdenum mineralization and evaluate new target areas, with a specific focus on identifying potential rhenium byproducts associated with molybdenite mineralization.

Key Details

• Re-assay Methodology: The company will use four-acid digestion with ICP-MS (inductively coupled plasma mass spectrometry) and ICP-AES (inductively coupled plasma atomic emission spectroscopy) to enhance understanding of copper equivalent (CuEq) values derived from the recently completed drill program.
• Phase 2 Drill Program Scope:
  • Drilling: Up to seven diamond drill holes totaling approximately 2,800 meters.
  • Target Area: Southeast portion of the project, between and beyond historical TECK drill holes.
  • Objectives: Test extensions of known copper-molybdenum mineralization and evaluate new target areas within the broader mineralized system.
  • Geophysics: Reconnaissance-scale induced polarization (IP) surveying to vector toward higher-grade zones.
  • Geology: Detailed geological mapping and prospecting to the north and west within the project's megabreccia zone.
• Byproduct Evaluation: The company will continue to evaluate the potential presence and significance of rhenium as a possible byproduct associated with molybdenite mineralization.
• Logistics and Community Engagement:
  • Field logistics will utilize either an expanded exploration camp or an existing floating logging camp.
  • Vanguard will continue close collaboration with the Klahoose First Nation, prioritizing local labor, training, and the use of Klahoose-owned service providers (including a Klahoose-owned logging company).
  • Consultation with the Homalko First Nation has concluded, and a permit for additional drill sites has been issued.
• Project Status: The drill program is fully permitted and on an accelerated timeline to follow up on recently announced drilling results that confirmed a significantly expanded copper-molybdenum mineralized system.
• Historical Context (Fall 2025 Drilling):
  • Hole 25-01 intersected continuous mineralization over 510.74 meters, substantially extending the vertical and downhole extent of mineralization previously defined by 2023 drilling.
  • Results indicate the system remains open at depth and is laterally and vertically continuous within the drilled area.
• Analytical Laboratory: Samples were submitted to ALS Canada Ltd. (ALS Laboratories), which is accredited to ISO/IEC 17025 standards. QA/QC procedures included certified reference materials, blanks, and preparation duplicates, showing acceptable accuracy and precision.
• Qualified Person: J.T. Shearer, MSc, DIC, PGeo, reviewed and approved the scientific and technical information.

Notable Quotes

• David Greenway, CEO: "With sustained strength in silver, gold and copper prices, the underlying value of mineralized rock is increasing. Advances in laboratory technology and analytical methods, combined with systematic drilling, provide an opportunity to re-evaluate historical data and reassaying material using modern techniques. The planned phase 2 drill program will build on the 2025 results at Redonda, while reassaying and updated geological work are intended to help better define and unlock the project's mineral potential as exploration continues in 2026."