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American Pacific Completes Phase I Drill Program at Madison Copper-Gold Project in Montana

Exploration Programs

American Pacific Completes Phase I Drill Program at Madison

Copper-Gold Project in Montana

Vancouver, British Columbia – June 12, 2025 —American Pacific Mining Corp. (CSE: USGD /

OTCQX: USGDF / FWB: 1QC) (“American Pacific” or the “Company”) is pleased to announce that

drilling has concluded at its 100% -owned Madison Copper -Gold Project (“ Madison” or the

“Project”) located in Silver Star, Montana. The first phase of 2025 drilling included a total of eight

(8) reverse circulation (“RC”) drill holes for 1,795 metres testing four priority target areas

identified through extensive data integration and analysis. Assay results from the program are

expected to be released in July 2025.

Phase I 2025 drilling focused on porphyry and skarn targets located laterally and down plunge of

known mineralization in addition to targets adjacent to the Broadway mine area. A larger second

phase of core drilling is planned to test additional porphyry, skarn and regional discovery target

areas that were part of a second permit. Successes from the first phase of drilling will also be

followed up on as part of H2 2025 drilling.

“Our 2025 drilling has strategically focused on high -impact targets that we believe can deliver

substantial value to our shareholders by revealing the true scale of the system beyond previously

mined areas,” said CEO Warwick Smith. “We look forward to assay results from the RC program

and preparing for an exciting follow up campaign that will include further step- out and deeper

drilling later this year.”

Madison Project Sampling and Analysis Quality Assurance and Quality Control Statement

American Pacific is committed to maintaining high standards of accuracy and reliability in

sampling and analysis procedures. The following Quality Assurance and Quality Control (QAQC)

measures are employed in the sampling and analysis processes.

Analytical Methods for the project include:

Paragon Labs

• 50AR-MS: Multi-element analysis (50 elements) using Aqua Regia digestion with ICP-MS

for trace elements.

• AuAg-GR30: Gold and silver analysis via 30g fire assay with gravimetric finish for high-

precision results.

• Au-FA30: Gold determination using fire assay with Aqua Regia digestion and

spectroscopy for detailed concentration measurement.

• OLAR-ASS: Over-limit Aqua Regia digestion ensures accurate results for high-

concentration samples.

About the Madison Copper-Gold Project

The Madison Project was host to small-scale production that concluded in 2012, with 2.7 million

pounds of copper produced at grades ranging from 20 -35% copper. Subsequent drilling at

Madison in 2017 included 30.18 metres of 24.50 g/t gold and 0.39% copper and 10.97 metres of

41.65 g/t gold and 0.38% copper (UG17- 05 and UG17- 06, respectively). Full disclosure can be

found in the Company’s NI 43- 101 Technical Report for the Madison Project

(americanpacificmining.com)

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 has two flagship assets: 100%-owned

Palmer Project, a Volcanic Massive Sulphide -Sulphate (VMS) project in Alaska, and the 100% -

owned Madison Project, a past- producing 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 an nual program that recognizes exemplary

accomplishments in 16 performance categories. Also, in American Pacific’s asset portfolio are

three high-grade, precious metals projects located in key mining districts of Nevada, USA: the

Ziggurat Gold project, the Gooseberry Silver-Gold project; and the Tuscarora Gold-Silver project.

The Company’s mission is to grow by the drill bit and by acquisition.

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.