Mr. Dustin Henderson reports

BLACK MAMMOTH METALS FINDS CHARGEABILITY ANOMALIES AND STAKES CLAIMS AT COTTONWOOD, NV

Black Mammoth Metals Corp. has released the results of a pole-dipole induced polarization geophysical survey and subsequent drill target definition at the Cottonwood target, within the company's Callaghan property, which is located on the eastern flank of the northern Toiyabe range, Lander county, Nevada. The company has also staked 152 unpatented lode claims managed by the Bureau of Land Management. Together with the 62 existing claims, the property covers a total of approximately 1,785 hectares (4,411 acres).

IP survey results:

1. A high-chargeability anomaly located in the western-southwestern portion of the property, possibly related to high-sulphide content, with an east-west maximum width of approximately 750 metres at 100- to 200-metre depth;
2. A potentially higher-grade, gold-mineralized structural corridor between the magnetic anomaly to the east of the company's recent CW drill holes and the chargeability anomalies to the west;
3. A chargeability anomaly in a possible upper contact zone with Paleozoic basement rocks at the southern end of the interpreted intrusion, also with an east-west maximum width of approximately 750 m at 300- to 500-metre depth.

The IP survey on the property comprised nine (IP) lines with a total length of approximately 23,800 line kilometres. The objective of the IP survey was to assess the intense sulphide gold mineralization encountered in drill holes CW-1, CW-2 and CW-2B from the 2025 spring drilling campaign (see news release dated May 14, 2025). Three reverse circulation holes intersected strongly altered rocks with associated gold anomalies from the beginning to the end of all holes. Hole CW-2B returned the best gold intercept: 61 metres of 0.416 gram per tonne, including 3.048 m of 3.57 grams per tonne. The alteration can be described as silicification and marbleized carbonates with abundant disseminated pyrite, suggesting a large, intrusive-related gold system in the vicinity.

The Callaghan property is located within an erosional window (the Callaghan window) that exposes highly prospective Lower Plate Paleozoic sedimentary rocks, which on the property have been strongly altered by gold-, arsenic-, antimony- and mercury-bearing hydrothermal fluids. The Callaghan property contains near-surface gold mineralization in several historic drill holes. The company has a 100-per-cent interest in Callaghan.

The IP survey suggests a prospective corridor with three potential targets currently measuring 3.5 kilometres in length by 1.3 kilometres in width. Drill testing will be needed to prove mineralization. The existing notice of intent will need to be amended for further drilling with all the target zones having good dirt road access requiring minimal property surface disturbance.

The company also continues to acquire non-core exploration interests in the western United States by purchase and by staking.

About Black Mammoth Metals Corp.

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

• Gallinas rare earth property, Lincoln county, New Mexico;
• Amador silver property, Lander county, Nevada;
• Big Bear copper property, Gila county, Arizona;
• Zulu gold property, Gila county, Arizona;
• Northern Star property, La Paz county, Arizona;
• Coal Canyon gold property, Pershing county, Nevada;
• Island Mountain gold district (including Coleman Canyon, St. Elmo and Diamond Jim (silver, lead, zinc and antimony)), Elko county, Nevada;
• Clover high-grade gold property, Elko county, Nevada;
• Leadore silver-lead-rare-earth-element property, Lemhi county, Idaho;
• East Reveille gold property, Nye county, Nevada;
• America mine gold property, San Bernardino, Calif.;
• Quito gold property, Lander county, Nevada;
• South Ravenswood gold district (including the Raven and Happy Cat properties), Lander county, Nevada (Happy Cat was purchased prior to January, 2024);
• 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, 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), director of Black Mammoth, has reviewed and approved the technical content in this release.

We seek Safe Harbor.