Giga's Turnagain adviser recommends further MT lines

Executive Summary

• Giga Metals Corp. announced positive results from a magnetotelluric (MT) geophysical survey conducted at the Turnagain project, specifically targeting the underexplored Attic zone.
• The survey, interpreted by Hardrock Geophysics, successfully mapped the geometry of the ultramafic intrusive complex, confirming an up-facing structural orientation and identifying an untested basal contact.
• The company plans to conduct further MT lines and electromagnetic (EM) surveys to delineate the intrusive geometry and prioritize drill targets, with funding secured through a recent financing to continue operations into spring 2026.

Key Details

• Survey Method: Magnetotelluric (MT) geophysical survey.
• Location: Turnagain project, Northern British Columbia; specifically the Attic zone of the Turnagain ultramafic complex.
• Interpretation Provider: Matthew Penney, President of Hardrock Geophysics.
• Key Findings:
  • Data supports an up-facing structural orientation of the intrusion.
  • Identified an untested basal contact.
  • Identified marginal contacts that are untested to any significant depth.
  • Successfully exploited resistivity contrast to map the geometry of the ultramafic intrusive complex.
• Next Steps:
  • Dr. Stephen Beresford has recommended additional MT lines to delineate intrusive geometry to the northwest and southeast.
  • These will be followed by EM surveys to help prioritize drill targets.
• Funding: The recently completed financing will fund the geophysical program into the spring of 2026.
• Project Context: The Turnagain project contains a significant undeveloped sulphide nickel and cobalt resource (held in Hard Creek Nickel, a joint venture with Mitsubishi Corp.) and is also prospective for copper, platinum, and palladium mineralization in the Attic zone.
• Technical Review: Technical information reviewed and approved by Greg Ross, PGeo, Project Manager and Qualified Person under National Instrument 43-101.

Notable Quotes

• "This is the first step of a methodical program exploring for copper, platinum and palladium in the Attic zone of the Turnagain ultramafic complex... The MT worked well in this environment to define geometry and reveal previously unknown features." — Scott Lendrum, CEO
• "MT is the perfect tool to exploit the strong resistivity contrast between the ultramafic complex and the surrounding sedimentary rocks to a significant depth... We now have a high degree of confidence that the Turnagain intrusion geometry is in place and up-facing, that the basal contact is untested, and the marginal contacts are untested to any significant depth." — Dr. Stephen Beresford, Advisor