American Pacific Mining Announces Commencement of 3D Magnetotelluric (MT) Survey at the Madison Copper-Gold Project in Montana

Executive Summary

• American Pacific Mining Corp. has commenced a property‑wide 3D magnetotelluric (MT) survey at its Madison Copper‑Gold Project in Montana.
• Approximately 100 broadband MT stations will be deployed on 250 m and 500 m grids to image subsurface resistivity contrasts to depths of 1–2 km, targeting concealed skarn clusters and porphyry centers.
• Results will feed into the company’s Q2‑2026 drill program, which will include at least four deep drill holes aimed at testing the mineral system below historic drilling levels.

Key Details

• Survey Scope: ~100 MT stations covering core and regional target areas; 250 m spacing over Madison‑Broadway corridor, 500 m spacing for deeper structural context.
• Imaging Depth: Designed to resolve resistivity contrasts to approximately 1–2 km depth.
• Contractor: Moombarriga Geoscience (M‑Geo US Inc.) will conduct the survey.
• Historical Production Context: Madison Mine historically produced ~2.7 M lbs Cu at 0.25% Cu and 7,570 oz Au @ 16.1 g/t; Broadway Mine produced 144,000 oz Au @ 9.9 g/t.
• Exploration Gap: Prior drilling averaged 300–400 m depth, leaving deeper portions of the mineral system untested.
• Survey Objectives: Identify conductive/resistive anomalies indicative of porphyry intrusions; map deep structural controls and feeder systems; refine drill targeting beneath known skarn zones; provide district‑scale context for exploration expansion.
• Integration Plan: MT data will be combined with existing geological, geochemical, geophysical, and drilling datasets to produce a full 3D resistivity inversion model and unified geological framework.
• Future Drilling: Minimum of four drill holes planned for Q2 2026 to test deeper portions of the system based on MT results.
• Qualified Person: Eric Saderholm, P.Geo., Managing Director of Exploration (NI 43‑101).

Notable Quotes

“While drilling to date has successfully delineated high‑grade copper‑gold mineralization within the skarn system, 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

Materiality Assessment: Non‑Material – Positive (provides material operational insight but does not yet constitute a financial or earnings impact).