U.S. Critical Minerals Rare Earths & Natural Pozzolan

INDEPENDENT LICENSED TECHNICAL QP VERIFICATION

Certified QP geological, drilling, assay, and ASTM C618 data maintained for diligence review.

Mineral Assets and Critical Minerals

Our primary mine hosts 16 distinct precious and strategic metals in a single, tightly controlled district of California. This diversified metal profile includes at least 16 elements currently classified as critical minerals by the United States government within the mineralized material across all three mine sites controlled by Environmental Minerals Inc., which together position the company as a potential major domestic source of rare earth and critical minerals within the United States.

The critical mineral suite identified in EMI’s assays includes multiple elements that appear on the official U.S. critical minerals list, positioning the company as a potential contributor to U.S. government objectives for domestic critical mineral security and U.S. critical minerals strategy.

Compliance

All scientific and technical information for Environmental Minerals Inc.’s projects has been prepared, reviewed, and approved by an independent Qualified Person (“QP”) as that term is defined in National Instrument 43‑101, and is supported by in‑ground assays completed by third‑party QPs and internationally recognized, independent third‑party laboratories. Detailed sampling, analytical, and test data, together with the QP’s verification procedures and conclusions, are available to banks and qualified investors on request.

For all geological, scientific, and technical information, Environmental Minerals Inc. has, as a matter of strategy, conducted its drilling under formal QP oversight for purposes of disclosure in accordance with National Instrument 43‑101 and SEC Regulation S‑K 1300. An executed QP certificate covering historical drilling and technical work has been in place since December 2013.

A new independent QP was formally appointed on February 5, 2026, with a high‑profile track record of acting for public gold, copper, and mineral companies and of signing technical disclosure for Canadian stock exchanges and Nasdaq‑listed mining issuers in connection with NI 43‑101–compliant reporting. This QP is a member of the American Institute of Professional Geologists (AIPG) and, on February 6, 2026, signed and certified his initial Certificate and Acknowledgment of Minerals and Adoption of Prior Geological Technical Work with respect to Environmental Minerals Inc.’s two California projects, thereby serving as successor to the retiring QP.

The Company’s new independent QP (M.Sc., CPG, License# AIPG-11031) is a professional geologist with more than thirty‑five (35) years of experience in gold exploration and mining, including extensive work on Carlin‑type, epithermal, mesothermal, and intrusive‑hosted deposits.

Third Party Qualified Technical Experts

Frederic C. Johnson, P.G.

Retiring QP, Mr. Johnson is a licensed Professional Geologist in the State of Utah (No. 5223618-2250) and President of Industrial Mineral Developments, Inc. A recognized QP for issuance on NI43-101 and S-K 1300 disclosure. He directed the drilling program and authored the comprehensive December 2013 report “Environmental Minerals, Inc. Pozzolan Resource Volume Estimates for Mining Production,” which documents the geology, drilling, sampling, and resource volume calculations for the Dunmovin natural pozzolan deposit. Mr. Johnson serves as the Qualified Person for geological interpretation and mineral resource estimation for the project. He has approximately 50 years of industry experience and is recognized as a Qualified Person for Regulation S‑K 1300 Technical Report Summary purposes and for NI 43‑101 Form 43‑101F1– style technical reporting.

Mr. Johnson, who pioneered our drilling operations and assisted in developing our mining platform, is retiring after more than 50 years in the industry. A true and accurate copy of his original signed Professional Geologist certification appears on page 15 of the 143‑page drilling and mapping report, and a reproduction of that stamp and signature block is shown below to evidence continuity of QP oversight for Environmental Minerals Inc.

Robert L. Day, Ph.D., P.Eng. (Pozzolan and Cement Materials Specialist)

Dr. Day is a civil engineer and materials specialist who authored the “Pozzolans for Use in Low-Cost Housing” state-of-the-art report for the International Development Research Centre (IDRC) while at the Department of Civil Engineering, University of Calgary. His work provides independent, peer-reviewed guidance on the classification, reactivity, and engineering performance of natural pozzolans and blended cements. Dr. Day’s expertise supports the characterization of EMI’s pozzolan in relation to ASTM and international performance standards.

Gregory J. Iseman (Analytical and Assay Specialist)

Mr. Iseman is the principal of Iseman Consulting in Henderson, Nevada, and has conducted extensive analytical work on precious‑metal bearing samples associated with EMI’s broader mineral projects. His laboratory reports document microwave digestion, fire‑inquart, electrowinning, and related analytical methods, providing an independent check on assay quality and metal values where relevant.

Dr. Robert Smith, Ph.D. (Pozzolan Performance and ASTM Compliance Specialist)

Dr. Smith is a senior materials scientist with Resource Materials Testing, Inc. (RMT) in North Carolina, where he specializes in ASTM qualification of supplementary cementitious materials. RMT conducted ASTM C618 testing on EMI surface and drill‑core samples and Dr. Smith authored the pozzolan evaluation report and opinion letter confirming that EMI’s Dunmovin material meets, and in several respects exceeds, the chemistry and performance requirements for Class N natural pozzolan. His independent assessment provides third‑party validation of EMI’s product quality and long‑term durability performance in concrete.

Together, these independent professionals provide third‑party technical validation of the geological model, resource volumes, and performance characteristics of Environmental Minerals Inc.’s natural pozzolan and associated mineral assets.

NATURAL POZZOLAN FOR THE NEXT GENERATION OF CEMENT & CONCRETE

Environmental Minerals Inc. controls three mine sites, including a historic California operation originally associated with major Los Angeles aqueduct and Hoover Dam infrastructure projects. The company also manages a significant natural pozzolan system across the western United States. EMI’s ongoing programs encompass drilling, gechemical analysis, and independent ASTM C618 performance testing to establish Class N supplementary cementitious material (SCM) certification, with all supporting technical data maintained for due diligence review.

The material is clean, consistent, low‑carbon, and requires only simple crushing and screening, enabling large‑scale SCM supply to West Coast concrete markets facing structural fly‑ash shortages. With direct highway access, minimal overburden, and independently verified volumetrics, EMI supports long‑life production planning and infrastructure‑grade diligence pathways.

INDUSTRIAL SCALE, ECONOMICS & MULTI‑COMMODITY VALUE

Independent Qualified Person volumetric work completed in 2013 and reviewed in a 2025 Independent Engineer’s Report indicates between approximately 4.1 and 6.2 billion cubic yards of pozzolan volcanic units on EMI’s Dunmovin claims, corresponding to roughly 600–750 million tons of ASTM C618‑compliant material categorized as measured, indicated, and inferred mineral resources as defined in the underlying technical reports.

At a modelled production rate of 3 million tons per year and a reference pozzolan price of 110 dollars per ton, the Independent Engineer calculates illustrative revenues of about 330 million dollars per year with EBITDA margins in the 40–50 percent range.

PRECIOUS‑METALS & MULTI‑COMMODITY GROSS VALUE

The NSH‑EMI ore‑body snapshot aggregates assay‑based “gross book value” estimates for multiple minerals in the complex ore (gold, silver, platinum, palladium, iridium, rhodium, and aluminium oxide/iron) across roughly 4 billion tons of ore. Based on an independent geologist and Qualified Person analysis, the fact sheet presents a “total estimated” of approximately $16.553 billion in gross value for the integrated portfolio, including Class N pozzolan and regional precious‑metals potential. These figures are not mineral reserves, and must not be construed as such, but are used for high‑level screening of resource potential and for framing engineering, planning, or discussion assumptions.

For a detailed overview of our rare earth elements and U.S. critical minerals portfolio, see our Critical Minerals & Rare Earths page. Additional information on EMI’s critical minerals and learning is available here Project Vault page.