Mr. Dustin Henderson reports

BLACK MAMMOTH METALS FINDS LARGE CHARGEABILITY ANOMALY UNDERLYING THE HISTORIC WORKINGS AND STAKES CLAIMS AT AMADOR SILVER PROPERTY, NV

Black Mammoth Metals Corp. has released the results of a recently completed IP (induced polarization) survey and has interpreted the related inversion model at its 100-per-cent-owned Amador property in Lander county, Nevada. The IP survey's objective was to investigate if significant sulphide mineralization is present underneath the historic Amador mine workings and along the related shear zone as sulphide mineralization produces characteristic chargeability and resistivity responses.

Survey results

The IP survey has delineated a large, high-chargeability anomaly, with high resistivity, extending at least 1.22 kilometres along the range front and under the historic Amador mine workings, where historic drilling and the company's recent rock-chip sampling encountered significant silver mineralization. The company's recent rock-chip samples assayed up to 23.05 ounces per ton silver (see the company's news dated July 22, 2025) while the historic drilling in this area has not been followed up on. The zero-to-50-metre IP depth slice aligns well with geophysical and sampling criteria while the 150-to-250-metre depth slice indicates a potential northeastern dip of the sulphide mineralized zone.

The workings of the historic Amador mine consist of at least three shafts, three adits and numerous exploration pits. The silver mineralization is hosted in a quartz-vein shear, which appears to have been developed along a contact zone of Devonian sediments (Slaven chert) with plutonic intrusive. The Amador property has been explored in recent years (2003 to 2010), with operators reporting significant silver mineralization in rock chips and in three- to 12-metre drill intervals.

Claims staking

The company has newly staked 55 unpatented lode claims at Amador. The range-front claims are administered by the Bureau of Land Management (BLM) while the claims uphill to the east are managed by the U.S. Forest Service. Together with the 23 existing claims, the property now covers a total of approximately 631 hectares (1,560 acres).

The company initially intends to permit five drill sites with a BLM (Bureau of Land Management) notice of intent to test the chargeability anomaly, which encompasses the high-grade silver shear zone along the range front and its potential deeper extension to the west.

About Black Mammoth Metals Corp.

Since January, 2024, Black Mammoth Metals has acquired a 100-per-cent interest in:

• The Ramsey silver property, La Paz county, Arizona;
• The Gallinas rare earth property, Lincoln county, New Mexico;
• The Amador silver property, Lander county, Nevada;
• The Big Bear copper property, Gila county, Arizona;
• The Zulu gold property, Gila county, Arizona;
• The Northern Star property, La Paz county, Ariz.;
• The Coal Canyon gold property, Pershing county, Nevada;
• The Island Mountain gold district (including Coleman Canyon, St. Elmo and Diamond Jim (silver, lead, zinc and antimony)), Elko county, Nevada;
• The Clover high-grade gold property, Elko County, Nevada;
• The Leadore silver-lead-REE (rare earth element) property, Lemhi county, Idaho;
• The East Reveille gold property, Nye county, Nevada;
• The America mine gold property, San Bernardino, Calif.;
• The Quito gold property, Lander county, Nevada;
• The South Ravenswood gold district (including the Raven, and Happy Cat properties) Lander county, Nevada (Happy Cat was purchased prior to January, 2024);
• The Callaghan gold district (including North Callaghan, Charlie, Cottonwood and Rast properties), Lander county, Nevada.

Black Mammoth also has a 100-per-cent interest in the Blanco Creek gold property in the Elk Creek mining district in central Idaho, which hosts three historic underground mines along 3,550 metres (11,644 feet) of strike on the northeast-trending regional Blanco shear zone.

Mark J. Abrams, CPG No. 11451, a qualified person as defined under National Instrument 43-101, Standards of Disclosure for Mineral Projects, and a director of Black Mammoth, has reviewed and approved the technical content in this release.

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