American Pacific Mining Identifies Large-Scale MT Anomaly at Madison Project with Drill Testing Underway

About this update from American Pacific Mining Corp.

Vancouver, British Columbia--(Newsfile Corp. - June 3, 2026) - American Pacific Mining Corp. (CSE: USGD) (OTCQX: USGDF) (FSE: 1QC) (WKN: A422L8) ("American Pacific", or the "Company") is pleased to announce that drill testing of a new priority target recently identified by a magnetotelluric ("MT") inversion survey at the Company's Madison Copper-Gold Project ("Madison" or the "Project") in Montana, is now underway. The large-scale, highly conductive geophysical anomaly is located in an area of the Project that has never been drill tested. It measures approximately 2 kilometres by 600 metres, and is expected to be drilled to a total depth of approximately 800 metres. "We have now received the final inversions of the MT survey conducted at Madison in March of this year," commented Managing Director of Exploration, Eric Saderholm. "The resolution and clarity of the newly acquired MT data far surpass any historical geophysical techniques that have been used to understand the Project, to date. The quality of the anomaly has allowed us to refine the azimuth and dip of our targets to more accurately test this impressive conductive feature and core drilling to test the porphyry is now underway. A second reverse circulation drill, expected to arrive on-site within two weeks, will focus on the shallower skarn targets." MT Survey Highlights Recent MT inversion modeling has defined two prominent conductive features at Madison, with the primary target being a large, north-northwest to south-southeast-trending conductor located in a previously undrilled portion of the Project area. The conductor appears to mirror the structural architecture of the district and is spatially associated with major fault corridors interpreted to have played an important role in controlling mineralizing fluids. Figure 1: Plan view showing MT anomaly and first hole of the 2026 program To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/10322/299882_727efbd2f4749b51_001full.jpg Results of the MT survey show: The MT inversion results suggest that the primary conductor may reflect a combination of structural preparation, hydrothermal alteration, and potential sulfide-bearing mineralization. The Company cautions that geophysical anomalies are not direct evidence of mineralization...

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