Mr. Eric Saderholm reports

AMERICAN PACIFIC MINING ANNOUNCES COMMENCEMENT OF 3D MAGNETOTELLURIC (MT) SURVEY AT THE MADISON COPPER-GOLD PROJECT IN MONTANA

American Pacific Mining Corp. has initiated a property-wide 3-D-magnetotelluric (MT) geophysical survey at its Madison copper-gold project in Montana.

The survey, to be conducted by Moombarriga Geoscience (M-Geo U.S. Inc.), will consist of approximately 100 MT stations deployed across the property on a combination of 250-metre and 500-metre grid spacing. The program is designed to image subsurface resistivity contrasts to depths of approximately one to two kilometres, targeting additional concealed skarn clusters and porphyry centres believed to be the potential source of both the copper-gold skarn mineralization historically mined at Madison, which produced nearly 2.7 million pounds of copper with an average grade of 25 per cent and 7,570 ounces of gold at 16.1 grams per tonne and the Broadway mine, which produced 144,000 ounces of gold at 9.9 grams per tonne.

Historical drilling at the Madison project has largely focused on shallow targets associated with near-surface skarn mineralization. The average historical drill depth is approximately 300 to 400 metres, leaving the deeper portions of the mineral system largely untested. As a result, significant portions of the underlying mineralized system remain unexplored.

The planned magnetotelluric (MT) survey is designed to directly address this data gap by imaging structures and potential intrusive bodies at depth that may be responsible for driving the known gold-copper mineralization. By mapping these deeper features, the survey will help refine drill targeting beneath historically explored levels and provide critical insights into the broader scale and architecture of the Madison mineral system.

The survey results will be used to refine drill targeting for the company's upcoming drill program, which is expected to include a minimum of four drill holes specifically designed to test the mineral system at depths below previous drilling.

Program highlights:

• Approximately 100 broadband MT stations covering core and regional target areas;
• High-resolution grid (250-metre spacing) over the Madison-Broadway Mines corridor;
• Expanded 500-metre grid providing deep structural context;
• Imaging capability to one-to-two-kilometre depth;
• Integration with existing geological, geochemical, geophysical and drilling data sets;
• Delivery of a full 3-D resistivity inversion model.

"Historical exploration at Madison has focused primarily on near-surface skarn mineralization, including the Madison mine area," commented managing director of exploration Eric Saderholm. "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. The survey represents a logical next step in evolving Madison from a single-skarn system toward a broader multiskarn system with significant copper-gold porphyry opportunities at depth."

The MT survey is specifically designed to:

• Identify conductive or resistive anomalies consistent with porphyry intrusive centres;
• Map deep structural controls and feeder systems;
• Refine drill targeting beneath and adjacent to known skarn mineralization;
• Provide district-scale context for exploration expansion.

Building a unified geological model

The MT survey forms part of the company's broader strategy to consolidate historical data sets into a unified 3-D geological framework for the Madison project. By integrating MT data with existing drill data, surface geology and alteration mapping, structural interpretation, and geochemical data sets.

Qualified person statement

Technical aspects of this press release have been reviewed and approved by the designated qualified person under National Instrument 43-101, Eric Saderholm, PGeo, managing director of exploration for the company.

About American Pacific Mining Corp.

American Pacific Mining is a precious and base metals explorer and developer focused on opportunities in the Western United States. The company's flagship asset is the 100-per-cent-owned past-producing Madison copper-gold project in Montana. For the Madison transaction, American Pacific was selected as a finalist in both 2021 and 2022 for Deal of the Year at the S&P Global Platts Metals Awards, an annual program that recognizes exemplary accomplishments in 16 performance categories. Through a 2025 transaction with Vizsla Copper, American Pacific has established a major equity position milestone upside exposure to the advanced exploration stage Palmer copper-zinc VMS (volcanogenic massive sulphide) project in Alaska. Also, in American Pacific's portfolio are several high-grade, precious metals projects located in key mining districts in Nevada, some on which the company intends to transact. The company's mission is to provide shareholders discovery and exploration upside exposure across its portfolio through partnerships, spinouts and direct exploration.

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