Volcanic mineral mined in Eastern California — independently tested, ASTM certified, and serving concrete, industrial, and agricultural markets.
One volcanic deposit. Three high-value markets. EMI's natural pozzolan delivers proven performance for infrastructure, specialty manufacturing, and agricultural soil health.
The premier fly ash replacement for ready-mix, mass concrete, DOT infrastructure, and precast. Superior long-term strength with major CO₂ savings.
High-silica mineral filler for flooring compounds, crack repair mortars, oil absorbents, grout, masonry, and environmental remediation.
Volcanic mineral soil conditioner proven to boost crop yields 47–67%, reduce water use 60%, and supercharge soil microbiome health.
Western U.S. SCM supply gap — fly ash travels 1,500+ miles from the Midwest. EMI sits inside the deficit zone serving CA, AZ & NV with no local competition. Lower freight = direct savings for buyers.
The only known Western U.S. site offering pozzolan + precious metals + basalt fiber feedstock co-located in a single resource. 4+ billion tons, 20+ year mine life. Competitors face 18–36 month permitting to enter.
ASTM C618 Class N certification with SMARA, BLM, and MSHA permits in process. New entrants face 2–5 years of regulatory risk before shipping a single ton.
Private rail siding in Phase 1 — expanding to 3 sidings by Year 5. Bulk, low-cost delivery to concrete producers across the Southwest. 18–36 months for any competitor to replicate.
Customers are identified and ready to purchase. EMI is capital-constrained, not demand-constrained. Confirmed purchase interest from major U.S. concrete producers and SCM distributors.
The deposit was successfully mined in the early 1900s for the Los Angeles Aqueduct, proving commercial viability and quality — then ASTM-certified and production-ready today.
"Fly ash supply is collapsing. IIJA mandates low-carbon concrete nationwide. EMI enters the market at precisely the right inflection point — with committed buyers, no adequate competition, and supply-ready operations."— EMI Market Analysis, 2025
Side-by-side performance and supply comparison for ready-mix and infrastructure concrete
Explore in-depth research, technical articles, sustainability data, and the science behind natural pozzolan — from ancient Roman engineering to modern concrete innovation.
Visit EnvironmentalMinerals.comContact EMI today for technical documentation, physical samples, and volume pricing.
EMI Natural Pozzolan is a finely milled, volcanic-origin supplementary cementitious material (SCM) that replaces fly ash — now in permanent supply decline — as a concrete additive. Independently tested and certified ASTM C618 Class N, it exceeds all acceptance thresholds by significant margins.
EMI pozzolan is used as a reactive ingredient in specialty manufacturer product formulations:
Pricing is customized based on your location, delivery method, and volume. Rail and truck delivery available from Eastern California.
Contact us for a tailored quote including delivery logistics to your plant.
| Mix Design | 7-Day SAI | 28-Day SAI |
|---|---|---|
| Typical C311 blend | 93% | 100% |
| 40% Replacement | 75% | 87% |
| 50% Replacement | 62% | 75% |
ASTM C618 minimum SAI = 75%. All EMI blends pass at 28 days.
| Cement Replacement | CO₂ Reduction |
|---|---|
| 10% | ~9.5% |
| 20% | ~19.0% |
| 30% | ~28.5% |
| 40% | ~38.0% |
| 50% | ~47.5% |
EMI's high-silica, finely-milled pozzolan is uniquely suited for specialty industrial formulations that require reactive mineral fillers, controlled chemistry, and consistent particle distribution.
Self-leveling underlayment, polished concrete floors, and decorative overlays. EMI pozzolan provides smooth flow, controlled set, and excellent long-term surface hardness.
High-performance repair mortars and crack injection grouts. Pozzolanic reactivity ensures chemical bonding to existing substrate — resists re-cracking and moisture ingress.
EPA-compliant industrial absorbent for oil spills, hydrocarbon containment, and hazmat response. High porosity volcanic structure outperforms clay-based alternatives.
Pozzolan mineral filler for tile adhesives, grouts, and setting compounds. Enhances workability, reduces shrinkage, and improves bond strength in wet environments.
Pozzolan binds heavy metals and contaminants in wastewater treatment. Used in sludge stabilization, encapsulation of industrial waste, and pH buffering applications.
CMU blocks, pavers, retaining wall systems, and architectural masonry. EMI pozzolan improves density, reduces efflorescence, and extends product service life.
Toxic waste containment, contaminated soil stabilization, and brownfield remediation. Pozzolan chemically immobilizes heavy metals and reduces leachate mobility.
Pozzolan-enhanced fire-resistant boards and panels. High SiO₂ content provides excellent thermal stability and passive fire protection properties.
Natural pozzolan as filtration media in water treatment and industrial fluid purification. Chemically inert with high surface area for efficient adsorption.
Agri-Pozz is finely milled volcanic pumicite — a natural soil conditioner containing over 70% amorphous silica, essential micronutrients, and a porous structure that transforms how soil holds water, air, and nutrients. It is not a chemical fertilizer — it is a mineral upgrade to the soil itself.
Research from Kamchatka demonstrates volcanic ash functions as a multi-nutrient mineral fertilizer whose catalytic mechanism replenishes trace metals (Mn, Zn, Mo, Cu, Fe) necessary for soil bacterial enzymes to efficiently cycle nitrogen, carbon, phosphorus, and sulfur. Small applications fertilize large surfaces.
UC San Diego researchers found adding just 3% volcanic ash to soil tripled plant growth by completely restructuring the soil microbiome — stimulating beneficial bacteria and suppressing harmful organisms.
Field trials with pozzolan mulch in desert environments increased crop yields 56–67% while dramatically cutting water consumption. Agri-Pozz acts as a sponge — holding precious irrigation water in the root zone and reducing evaporation by up to 60%.
| Component | Content | Agricultural Role |
|---|---|---|
| Silica (SiO₂) | 70% | Cell strength, disease resistance |
| Alumina (Al₂O₃) | 15% | Soil structure, nutrient retention |
| Iron Oxide (Fe₂O₃) | 2.4% | Plant metabolism cofactor |
| Calcium (CaO) | 3.4% | pH regulation, cell membranes |
| Magnesium (MgO) | 1.4% | Chlorophyll synthesis |
| Trace metals (Mn, Zn, Mo, Cu) | Present | Enzyme catalysis in soil bacteria |
Pricing is tailored to volume, application, and delivery logistics. Available Spring 2026 from Eastern California — bulk transport delivery, 2 hours north of Los Angeles.
Early order and volume pricing available for fertilizer blenders and distributors.
Blend into base fertilizers at 400–2,000 lbs/acre. Reduces nitrogen loss, prevents nutrient runoff, and improves water-holding capacity — fertilizer investment works harder and lasts longer.
Orchards and vineyards benefit from improved rooting volume, moisture buffering, and slow-release silicon that strengthens plant cell walls. Better roots, higher-quality yields.
Cost-effective perlite alternative for growing media. Superior aeration, moisture management, and long-term mineral nutrition — perfect for organic and regenerative systems.
Integrated into rootzone mixes, plant-available silicon reduces disease 20–40%, improves drought tolerance, and enhances wear recovery — cutting irrigation requirements significantly.
Premium ingredient for next-generation product lines. Formulate volcanic ash-enhanced blends targeting regenerative agriculture and drought-prone markets seeking natural solutions.
Transforms marginal arid land into productive farmland. 60% evaporation reduction and 56–67% yield increases validated. Field-proven in California's most challenging growing conditions.
Chemical Composition
| Oxide | EMI Result (%) | ASTM C618 Limit | Status |
|---|---|---|---|
| SiO₂ | 68.41 | — | — |
| Al₂O₃ | 15.58 | — | — |
| Fe₂O₃ | 3.05 | — | — |
| Σ Oxides | 87.04% | ≥ 70.0% | +17% over min |
| CaO | 3.36 | — | — |
| MgO | 1.35 | — | — |
| SO₃ | 0.01% | ≤ 4.0% | Pass |
| Moisture | 0.25% | ≤ 3.0% | Pass |
| Loss on Ignition | 4.31% | ≤ 10.0% | Pass |
Physical Properties
| Property | Result | ASTM Limit | Status |
|---|---|---|---|
| % Retained on No. 325 Sieve | 1.0% | ≤ 34% | Pass |
| Blaine Fineness | 7,060 cm²/g | Informational | — |
| Density | 2.51 | — | — |
| Water Requirement | 99% | ≤ 115% | Pass |
Strength Activity Index — ASTM C311
| Cement Replacement | 7-Day SAI | 28-Day SAI | Result |
|---|---|---|---|
| Typical C311 blend | 93% | 100% | Exceeds |
| 40% Replacement | 75% | 87% | Compliant |
| 50% Replacement | 62% | 75% | Compliant |
EMI vs. Alternative SCMs
| Attribute | EMI Pozzolan | Fly Ash (F) | Slag (GGBFS) |
|---|---|---|---|
| Cement Replacement | 30–50% | 15–30% | 30–50% |
| Long-Term Strength | High, stable | Moderate | High |
| Supply Reliability | High | Declining | Region-limited |
| CO₂ Reduction | High | Moderate | High |
| Cost Volatility | Low–Moderate | Increasing | Moderate |
Signed ASTM C618 lab reports, ASTM C311 test data, sampling SOPs, and Certificates of Analysis available to qualified buyers and engineers.
Environmental Minerals Inc. is developing a scalable natural pozzolan mining and processing operation on a 640-acre site in Eastern California — the largest known natural pozzolan deposit in North America.
Our mission is to provide a reliable, domestic source of high-quality natural pozzolan that addresses the permanent structural decline of fly ash supply across U.S. constructi
The deposit was successfully mined in the early 1900s for the Los Angeles Aqueduct — confirming commercial viability and exceptional quality. That same material, now ASTM-certified and processed to modern specifications, is available today.
| Location | Eastern California (mine site) |
| Site Size | 640 acres (6 sq. miles) |
| Confirmed Reserves | 4+ Billion Tons |
| Mine Life | 20+ Years at Full Production |
| Phase 1 Capacity | 300K–1M TPA |
| Markets Served | CA, AZ, NV, Southwest U.S. |
Jay Bergeron
Chief Sustainability, Regulatory & Political Affairs Officer
417-380-9474 · jay@environmentalminerals.com
Frederic C. Johnson, P.G.
Industrial Mineral Developments Inc. — Geological Validation
Stantec Environmental Services
Environmental Compliance
ALS Geochemistry Global — Reno, NV
Assay & Lab Testing Services
Whether you're a concrete producer seeking a reliable fly ash replacement, a specialty manufacturer looking for a high-performance mineral filler, or an agronomist exploring volcanic soil amendments — we'd welcome the conversation.
Full Materials Available Under NDA
Investor deck, geological summary, and Phase 1-3 development plan available to qualified parties. Site coordinates disclosed to qualified buyers only.