Silver Storm begins underground drilling at La Parrilla

Executive Summary

• Silver Storm Mining Ltd. has commenced a 6,000-metre underground drilling campaign at its 100%-owned La Parrilla silver mine complex in Durango, Mexico.
• The drilling program is designed to support the current internal mine plan by increasing the indicated and inferred resource base, advancing toward a potential restart of operations in the second quarter of 2026.
• The campaign focuses on exploration stepout and infill drilling at the Quebradillas, San Marcos, and Rosarios mines, with an additional 4,000 metres of follow-up drilling proposed as mine development progresses.

Key Details

• Total Drilling Volume: 6,000 metres of underground drilling commenced.
• Quebradillas Mine (3,500 metres):
  • Drilling targets C460, C550, Norte Sur, La Estrella, and San Nicolas zones.
  • C460 Zone: Sulphide replacement body concordant to bedding, striking north-northwest over 460m strike length and 500m vertical extent, with thickness up to 8.5m. Drilling tests southern strike and depth extension.
  • C550, Norte Sur, La Estrella, San Nicolas Zones: Sulphide-bearing fault veins and breccias. Drilling explores strike and downdip extensions.
• San Marcos Mine (1,000 metres):
  • Drilling targets San Marcos and C1100 zones.
  • San Marcos Zone: Fault-vein oxide mineralization, striking north-northwest over 700m strike length and 350m vertical extent, with thickness up to 17m. Drilling focused on near-surface and middle levels.
  • C1100 Zone: Sulphide-bearing fault-vein mineralization, striking northwest over 500m strike length and 430m vertical extent, with thickness up to 1.5m. Drilling tests zone at depth below historical development.
• Rosarios Mine (1,500 metres):
  • Drilling targets Rosarios and RRFW zones.
  • Rosarios Zone: Fault-vein sulphide mineralization (stockwork or replacement), striking west-northwest over 1.75km strike length and 900m vertical extent, with thickness up to 14m. Drilling focused on central and western extensions.
  • RRFW Zones: Five subparallel fault structures within the western footwall of the Rosarios zone, characterized by sulphide breccias and replacement zones. Known strike lengths vary from 150 to 490m over vertical extents between 200 and 270m.
• Future Plans:
  • An additional 4,000 metres of drilling proposed as a follow-up to the initial program.
  • Surface exploration programs planned for 2026 on seven target areas: Rosarios C340 West Extension, 14 Marcos, La Ilusion Argenis, Quebradillas Open Pit, San Marcos North, San Marcos Vacas Gap, and Vacas South.
• Operational Context: The company is advancing toward a potential restart of operations at La Parrilla in Q2 2026. The complex includes a 2,000-tonne-per-day mill and three underground mines.

Notable Quotes

• "The Silver Storm team is excited to have drilling under way again at La Parrilla. This initial phase is designed to support the current internal mine plan by increasing the indicated and inferred resource base as we advance toward the potential restart of operations at La Parrilla in the second quarter of 2026. The team is also planning surface exploration programs to be initiated in 2026 on seven target areas within the La Parrilla concessions." — Greg McKenzie, President and CEO