American Pacific starts 3-D survey at Madison project

Executive Summary

• American Pacific Mining Corp. has initiated a property-wide 3-D magnetotelluric (MT) geophysical survey at its Madison copper-gold project in Montana to image subsurface resistivity contrasts at depths of one to two kilometres.
• The survey aims to identify concealed porphyry centres and deep structural controls to refine drill targeting for an upcoming program expected to include a minimum of four deep drill holes in Q2 2026.
• Historical exploration at Madison has focused on shallow targets (300-400m depth), leaving deeper portions of the mineral system largely untested; this survey seeks to bridge that data gap.

Key Details

• Survey Operator: Moombarriga Geoscience (M-Geo U.S. Inc.).
• Survey Scope: Approximately 100 broadband MT stations deployed across core and regional target areas.
• Grid Spacing: Combination of high-resolution 250-metre spacing over the Madison-Broadway Mines corridor and expanded 500-metre spacing for deep structural context.
• Imaging Depth: Capable of imaging subsurface resistivity contrasts to depths of approximately one to two kilometres.
• Historical Production Context:
  • Madison Mine: Produced nearly 2.7 million pounds of copper (avg grade 25%) and 7,570 ounces of gold (avg grade 16.1 g/t).
  • Broadway Mine: Produced 144,000 ounces of gold (avg grade 9.9 g/t).
• Strategic Goal: To evolve the Madison project from a single-skarn system toward a broader multiskarn system with significant copper-gold porphyry opportunities at depth.
• Data Integration: Results will be integrated with existing geological, geochemical, geophysical, and drilling datasets to build a unified 3-D geological framework.
• Next Steps: Survey results will directly inform the company's 2026 drill program, specifically targeting depths below previous drilling levels.

Notable Quotes

• "Historical exploration at Madison has focused primarily on near-surface skarn mineralization... the deeper magmatic source that likely drove this mineralization has not yet been systematically imaged or tested. The MT surveys will allow us to identify potential concealed porphyry centres at depth and connect them to known mineralization at surface as we commence our 2026 drill program at Madison in Q2." — Eric Saderholm, Managing Director of Exploration