American Pacific Mining Announces Commencement of 3D Magnetotelluric (MT) Survey at the Madison Copper-Gold Project in Montana
American Pacific Mining Announces Commencement of 3D Magnetotelluric (MT) Survey at
the Madison Copper-Gold Project in Montana
Vancouver, British Columbia – March 16, 2026 —American Pacific Mining Corp. (CSE: USGD /
OTCQX: USGDF / FSE: 1QC1) (“American Pacific”, or the “Company”) is pleased to announce the
initiation of a property wide 3D -Magnetotelluric (“ MT”) geophysical survey at its Madison
Copper-Gold Project (“Madison” or the “Project”) in Montana.
The survey, to be conducted by Moombarriga Geoscience (M -Geo US Inc.), will consist of
approximately 100 MT stations deployed across the property on a combination of 250-metre and
500-metre grid spacing (see Figure 1) . The program is designed to image subsurface resistivity
contrasts to depths of approximately 1–2 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% and 7,570 ounces of gold at 16.1 grams per tonne 1 and the
Broadway Mine which produced 144, 000 ounces of gold at 9.9 grams per tonne1.
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 300-400
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
1 “NI 43-101 Technical Report Update for the Madison Project, Madison County, Montana, USA”, effective date February 21, 2022,
prepared for American Pacific Mining Corp. by Childs Geoscience Inc. with John F. Childs, Ph.D., Registered Geologist as Qualified
Person, available on the American Pacific Mining Corp. website (https://americanpacificmining.com) and under the Company’s profile on
SEDAR+.
• Expanded 500-metre grid providing deep structural context
• Imaging capability to 1–2 kilometres depth
• Integration with existing geological, geochemical, geophysical and drilling datasets
• Delivery of a full 3D resistivity inversion model
Figure 1: 3D Magnetotelluric Survey Layout
“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 cent res 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
multi-skarn 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 centers
• 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 datasets
into a unified 3D geological framework for the Madison Project. By integrating MT data with
existing drill data , s urface geology and alteration mapping , s tructural interpretation and
geochemical datasets.
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, P.Geo., Managing Director of Exploration
for the Company.
About American Pacific Mining Corp.
American Pacific Mining Corp. 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% -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 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, spin -outs and direct
exploration.
American Pacific is incorporated pursuant to the laws of British Columbia and its head office is
located at Suite 910 – 510 Burrard Street Vancouver, BC, V6C 3A8.
On behalf of the American Pacific Mining Corp Board of Directors:
Warwick Smith, CEO & Director
Corporate Office: Suite 910 – 510 Burrard Street
Vancouver, BC, V6C 3A8 Canada
Investor relations contact:
Kristina Pillon, High Tide Consulting Corp.
604.908.1695 / [email protected]
Media relations contact:
Adam Bello, Primoris Group Inc.
416.489.0092 / [email protected]
Full disclosure can be found in our NI 43-101 Technical Report for the Madison Project at
www.americanpacificmining.com.
The Canadian Securities Exchange has neither approved nor disapproved the contents of this
news release.
FORWARD-LOOKING STATEMENTS
This news release includes certain statements and information that constitute forward -looking
information within the meaning of applicable Canadian securities laws. All statements in this news release,
other than statements of historical facts, are forward -looking statements. Such forward -looking
statements and forward-looking information specifically include, but are not limited to, statements that
relate to the completion of the transaction, and timely receipt of all necessary approvals.
Any statements or information that express or involve discussions with respect to predictions, expectations,
beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always,
using words or phrases such as "expects", "anticipates", "believes", "plans", "estimates", "intends",
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negative of any of these terms and similar expressions) are not statements of historical fact and may be
considered forward-looking information. The Company's forward-looking information is based on the
assumptions, beliefs, expectations and opinions of management as of the date of this press release and
include but are not limited to information with respect to, the transaction and receipt of all necessary
approvals therefor. Other than as required by applicable securities laws, the Company does not assume
any obligation to update forward -looking information if circumstances or management's assumptions,
beliefs, expectations or opinions should change, or changes in any other events affecting such statements
or information. For the reasons set forth above, investors should not place undue reliance on forward -
looking information.