A true and accurate copy of his original signed Professional Geologist certification appears on page 15 of the 143‑page drilling and mapping report; 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, geochemical 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.

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Environmental Minerals Inc. provides natural pozzolan, rare earth‑bearing pozzolan and basalt‑derived construction materials to the U.S. infrastructure and industrial minerals markets, with a focus on low‑carbon concrete and long‑life, durability‑critical applications.