Mr. Simon Clarke reports

AMERICAN CRITICAL MINERALS PROVIDES UPDATE ON SEISMIC INTERPRETATION FOR ITS GREEN RIVER POTASH AND LITHIUM PROJECT

Agapito Associates LLC has further reviewed the ExplorTech LLC (2011) seismic reflection and reprocessing report for the northern portion of American Critical Minerals Corp.'s Green River potash and lithium project. Full results of this review will also be included in an updated technical report on the Green River potash which will be published shortly.

• The existing seismic data and interpretation for the northern portion of the property from four 2-D seismic reflection lines has recently been reviewed by Agapito with respect to potash cycles 5, 13 and 18, as well as Paradox and Leadville clastic intervals.
• A time structure map of the top of the Paradox formation salt was constructed.
• Geologic modelling based on tops picked from existing oil and gas wells supports the interpretation of a gentle regional dip in the cycles of interest.
• This interpretation supports relatively flat-lying potash cycles (dip approximately 4 per cent to the north) which further supports the potential of suitability for solution mining.
• The data further demonstrates a northward thickening of the Paradox formation along with high-angle faults, which may correspond to increasing both the quality (through potential chemical enrichment) and the volumetric potential of brines.

Simon Clarke, president and chief executive officer, stated: "Utilizing the large seismic database from oil and gas wells has allowed us to further see the relatively flat-lying Paradox and Leadville stratigraphy in the subsurface of our Green River project. This has important implications for both potash and lithium. Based on this interpretation, the property appears to be suitable for solution mining wells within the potash cycles.

"In addition, the clastic zones appear to demonstrate a northward thickening in conjunction with high-angle faulting, which may correspond to increasing both the quality and the volume of the lithium- and bromine-rich brines. This gives us further confidence in our exploration targets as we move rapidly towards drill testing our key targets.

"The location of our Green River project and its proximity to over 50 years of potash production as well as advanced lithium development, already highlights the strategic potential of the project. In addition, the apparent flat-lying nature of its mineralization further validates the potential to successfully develop and mine the potash cycles and the lithium brines."

Seismic interpretation (ExplorTech)

The company licensed four 2-D seismic lines totalling approximately 32.5 miles from Seismic Exchange (SEI). These lines loosely cover their northwest potash permit area in Grand county, Utah. These seismic data were collected in the late 1960s with dynamite sources. The data needed to be reprocessed before interpretation. Excel Geophysical (Greenwood Village, Colo.) reprocessed the data. John Arestad of ExplorTech (Centennial, Colo.) interpreted the data. Agapito recently reviewed the data in the context of the Green River project.

From those interpreted lines, a time structure map of the top of the Paradox formation salt was constructed by ExplorTech. The map indicates a structural high, likely the Big Flat Dome in the south dipping on a fairly regular slope to the north. This conforms to the regional interpretation from modeling of an overall dip of about 4 per cent.

No major faulting, collapses or diapirism were observed. Minor faulting is identified in the lowermost part of the target Paradox evaporite sequence, while the uppermost part of the evaporite interval, including Cycle 5, showed no interpretable faulting. Faulting extending as high as Cycle 13 is apparent to the southwest.

The seismic data show that faulting is minor within the lowermost part of the target Paradox evaporite sequence. The uppermost part of this interval does not show interpretable faults. The maps produced in the study should be useful for exploration drilling activities. Well prognoses can be made using the interpreted seismic horizons and the existing time-depth data. The hummocky looking appearance of the Paradox salt section suggests that the salt has moved somewhat in the target area and that may have implications for potash recoveries.

The interpretation supports relatively flat-lying potash cycles (dip approximately 4 per cent to the north) which further support the possibility of being suitable for solution wells. The data further demonstrates a northward thickening of the Paradox formation along with high-angle faults, which may correspond to increasing both the quality (through potential chemical enrichment) and the volumetric potential of brines.

The reprocessing and interpretation of these lines is specialized work and may require expertise specific to the Paradox basin. That said, geologic modelling based on tops picked from existing oil and gas wells supports the interpretation of a gentle regional dip in the cycles of interest. The selection of tops on formations of regional extent such as the Leadville, Hermosa or Chinle is regarded as straightforward. The company is further looking to add to this data set by acquiring additional seismic data licences.

About American Critical Minerals' Green River potash and lithium project

The Green River potash and lithium project is situated within Utah's highly productive Paradox basin, located 20 miles northwest of Moab, Utah, and has significant logistical advantages including close proximity to major rail hubs, airport, roads, water, towns and labour markets. It also benefits from close proximity to the agricultural and industrial heartland of America and numerous potential end-users for its products.

The history of oil and gas production across the Paradox basin provides geologic data from historic wells across the project, and the wider basin, validating and derisking the potential for high-grade potash and large amounts of contained lithium. Wells in and around the project reported lithium up to 500 ppm (parts per million), bromine up to 6,100 ppm and boron up to 1,260 ppm. These data are reinforced by nearby potash production and the advanced stage of development of neighbouring lithium projects. The Paradox basin is believed to contain up to 56 billion tonnes of lithium brines, potentially the largest such resource in the United States.

The Paradox basin is believed to contain up to 56 billion tonnes of lithium brines, potentially the largest such resource in the U.S. The company also has a National Instrument 43-101 exploration target of 600 million to 1.0 billion tonnes (Bt) of sylvanite grading from 12 per cent to 18 per cent potassium oxide based on elog (eK2O equals 19 per cent and 29 per cent potassium chloride based on elog (eKCl)). In addition, the company also announced exploration targets for lithium and bromine on Oct. 6, 2025: 2.1 billion cubic metres (brine volume) grading from 71.6 to 216.3 parts per million lithium; and 2.1 billion cubic metres (brine volume) grading from 3,656 to 4,741 parts per million bromine.

The company holds a 100-per-cent interest in 11 state of Utah (SITLA) mineral and minerals salt leases covering approximately 7,050 acres, 1,094 federal lithium brine claims (BLM placer claims) covering 21,150 acres and 11 federal (BLM) potash prospecting permits covering approximately 25,480 acres. Through these leases, permits and claims the company has the ability to explore for potash, lithium and potential byproducts across the entire Green River project (approximately 32,530 acres). The company is authorized to drill a total of seven drill holes across the project (pending bonding the recently approved four drill holes).

Intrepid Potash Inc. is America's largest potash company and only U.S. domestic potash producer and currently produces potash from its nearby Moab Solution mine, which the company believes provides strong evidence of stratigraphic continuity within this part of the Paradox basin. Anson Resources Ltd. has advanced lithium development projects contiguous to the northern boundary of the company's Green River project and neighbouring to the south. Anson has a large initial resource, robust definitive feasibility study and has recently completed successful piloting operations through its partnership with Koch Technology Solutions, as well as an offtake agreement with LG Energy Solution. The Anson exploration targets encompass the combined Mississippian Leadville formation and the Pennsylvanian Paradox formation brine-bearing clastic layers, which also underlie American Critical Minerals' entire project area.

In 2022, the U.S. imported approximately 96.5 per cent of its annual potash requirements with domestic producers receiving a higher sales price due to proximity to market. In March, 2024, the U.S. Senate introduced a bill to include key fertilizers and potash on the U.S. Department of Interior List of Critical Minerals which already includes lithium, and this process is well advanced with potash being added to the USGS Draft Critical Minerals List. In August, 2025, recent market estimates suggest that the global potash market is over $50-billion (U.S.) annually and growing at a compound annual growth rate (CAGR) of close to 5 per cent. Annual lithium demand is now estimated to be over one million tonnes globally and continuing to grow rapidly.

Qualified person

The technical content of this news release has been reviewed and approved by Dean Besserer, PGeo, the chief operations officer of the company and a qualified person for the purposes of National Instrument 43-101.

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