Homerun Resources Inc. Announces Positive Results of Confirmation Testing by Minerali Industriali Engineering on the Santa Maria Eterna Silica Sand for the Manufacture of Antimony-Free Solar Glass

Homerun Resources (OTCQB: HMRFF) announced Minerali Industriali Engineering completed lab-scale confirmation testing on Santa Maria Eterna silica sand on Dec 11, 2025, finding the material suitable for manufacturing antimony-free solar glass.

Rhea-AI Summary

Homerun Resources (OTCQB: HMRFF) announced Minerali Industriali Engineering completed lab-scale confirmation testing on Santa Maria Eterna silica sand on Dec 11, 2025, finding the material suitable for manufacturing antimony-free solar glass. The unwashed sand showed 99.7% SiO2 and 24 ppm Fe. Basic treatment reduced Fe to 14 ppm (one contaminant, Ti, slightly above range). Complete treatment achieved 8 ppm Fe and 100% first-stage compliance. Homerun previously reported a NI 43-101 resource of 25.56 Mt Measured and 38.35 Mt Inferred (>99.6% SiO2) from one district asset.

Positive

• Sand purity of 99.7% SiO2
• Measured resource of 25.56 Mt
• Complete treatment reduced Iron to 8 ppm
• Lab tests show 100% first-stage compliance

Negative

• Basic treatment left Titanium slightly above desired range
• Resource includes 38.35 Mt Inferred (inherent uncertainty)
• Results are from lab-scale tests, not plant-scale validation

Argus Dec 11 session

+5.67% close to close Open Argus

Details

News Market Reaction – HMRFF

On Dec 11, the day this news came out, HMRFF closed 5.67% above the previous close.

Data tracked by StockTitan Argus for the Dec 11 session.

Market Context

On Dec 11, the day this news came out, the stock closed 5.7% above the previous close. A strong posi...

Analysis

On Dec 11, the day this news came out, the stock closed 5.7% above the previous close. A strong positive reaction aligns with prior instances where technical and strategic milestones, such as the NREL IP agreement and AI EMS deployment, coincided with gains of up to 17.68%. Confirmation that Santa Maria Eterna silica meets strict impurity thresholds further de-risked the resource story. However, past financing activity and relatively low typical trading volume (around 31,085 shares average) suggest that liquidity and deal structures could influence how long such moves persisted.

Key Figures

Measured resource: 25.56 Mt Inferred resource: 38.35 Mt Silica grade: >99.6% SiO2 +5 more

Measured resource

25.56 Mt

NI 43-101 Mineral Resource Estimate at Santa Maria Eterna

Inferred resource

38.35 Mt

NI 43-101 Mineral Resource Estimate at Santa Maria Eterna

Silica grade

>99.6% SiO2

High-purity silica sand resource quality

Raw sand purity

99.7%

Unwashed raw silica sand characterization

Iron content raw

24 ppm Fe

Initial unwashed silica sand iron level

Iron after basic treatment

14 ppm Fe

Wet screening (basic solution) test result

Iron after complete treatment

8 ppm Fe

Attrition washing and separation (complete solution) result

Assets in district

3 assets

Santa Maria Eterna is one of three controlled assets

Historical Context

5 past events · Latest: Dec 08

5 events

1. Dec 08

   Financing completed

   24h Move

   +6.2%

   Closed CDN$6,000,000 financing with Sorbie Bornholm LP under escrow structure.

2. Dec 02

   Advisor engagement

   24h Move

   -0.5%

   Appointed corporate development advisor to advance LDES and AI EMS commercialization.

3. Dec 01

   IP agreement

   24h Move

   +9.7%

   Executed NREL IP agreement and filed new thermal energy storage patent application.

4. Nov 28

   New listing

   24h Move

   +1.7%

   Shares began trading on Tradegate Exchange, expanding access and liquidity in Europe.

5. Nov 26

   Tech deployment

   24h Move

   +17.7%

   First commercial installation of "The Hub" AI EMS on a Risen battery system.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

ni 43-101, mineral resource estimate, bankable feasibility study, xrf analysis, +3 more

7 terms

ni 43-101 regulatory

"Please view NI 43-101 Technical Report here: https://homerunresources.com/ni-43-101-belmonte/"

A Canadian regulatory standard that sets the rules for how mining and exploration companies must report mineral resources and reserves, requiring technical reports prepared or signed off by an independent, certified expert. It matters to investors because it creates a consistent, transparent “inspection report” for mining projects, making it easier to compare prospects, judge the reliability of claims, and assess geological and financial risk before investing.

mineral resource estimate technical

"completed a 43-101 compliant Technical Report with Mineral Resource Estimate containing a preliminary resource"

A mineral resource estimate is a calculated approximation of how much metal or mineral material likely exists in a particular deposit and where it sits underground, similar to estimating how many cookies are in a jar by peeking at the layers. It matters to investors because it provides a data-based starting point for judging a project's potential value, future production and risks, while not guaranteeing recoverable or profitable amounts.

bankable feasibility study technical

"This work is a key third-party deliverable under the Company's ongoing Bankable Feasibility Study."

A bankable feasibility study is a comprehensive, independently reviewed analysis that shows whether a proposed project is technically sound, legally clear, environmentally acceptable and financially viable enough for banks or other lenders to provide long-term financing. Think of it as a detailed business plan plus an inspector’s report that quantifies costs, revenue forecasts and key risks; investors use it as evidence that the project can deliver returns and secure the funding needed to proceed.

xrf analysis technical

"gravimetric separation and magnetic separation. XRF analysis was performed on all treatment outputs:"

XRF analysis is a laboratory technique that identifies the elemental makeup of a sample by shining X‑rays on it and measuring the characteristic secondary rays each element emits — like using a fingerprint scanner to tell which metals or elements are present. Investors care because XRF gives quick, non‑destructive confirmation of raw material quality, mineral grades, product composition or contamination, which can affect production costs, regulatory compliance and the value of assets.

attrition washing technical

"the complete solution, consisting of attrition washing and grain size classification, gravimetric separation"

Attrition washing is the practice of reducing reported headcount or labor costs by labeling layoffs, firings, or other workforce cuts as ordinary attrition (people leaving voluntarily or not being replaced). For investors, this matters because it can mask the true scale and cost of restructuring, change short‑term payroll liabilities and cash needs, and signal management is managing optics rather than underlying performance—like hiding a renovation by saying rooms were never used.

gravimetric separation technical

"attrition washing and grain size classification, gravimetric separation and magnetic separation."

Gravimetric separation is a physical process that sorts materials by weight or density using gravity or centrifugal force, similar to how panning separates heavier gold flakes from lighter sand. Investors care because it affects how efficiently raw materials, ores or recycled components are recovered, which in turn influences operating costs, yields, and environmental compliance for mining and industrial companies. Better separation can mean higher product value and lower waste disposal expenses.

magnetic separation technical

"grain size classification, gravimetric separation and magnetic separation."

Magnetic separation is a method that uses magnets to pull magnetic materials away from non-magnetic ones, like using a magnet to pick out nails from a sandbox. In industry and labs it is used to concentrate minerals, remove contaminants, or isolate biological particles, affecting product purity, yield, operating costs and environmental compliance—factors that can materially influence a company’s profitability and regulatory risk profile.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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KEY HIGHLIGHTS:

• MIE has successfully completed testing, confirming suitability of Santa Maria Eterna silica sand for high quality, antimony-free glass manufacturing.
• Initial material quality is extremely high allowing for minimal upgrades to achieve the technical requirements for solar glass manufacturing.

Vancouver, British Columbia--(Newsfile Corp. - December 11, 2025) - Homerun Resources Inc. (TSXV: HMR) (OTCQB: HMRFF) ("Homerun" or the "Company") is pleased to announce that the Company has received a Lab Scale Treatment Test Report from Minerali Industriali Engineering Srl ("MIE" and MIE Report) (see press release from November 18^th, 2025) of the high purity, low iron silica sand from Santa Maria Eterna, Belmonte, Bahia, Brazil, confirming its application for the manufacture of antimony-free solar glass. This work is a key third-party deliverable under the Company's ongoing Bankable Feasibility Study.

As previously announced, Homerun has completed a 43-101 compliant Technical Report with Mineral Resource Estimate containing a preliminary resource of 25.56 Mt Measured and 38.35Mt Inferred of high-purity silica sand (>99.6% SiO2). This Mineral Resource Estimate is from only one of the three assets controlled by Homerun in the District.

Please view NI 43-101 Technical Report here: https://homerunresources.com/ni-43-101-belmonte/

The MIE Report starts with a characterization of the unwashed raw silica sand, which confirms the inherent low-contaminant nature of this unique material, with purity of 99.7% and only 24ppm of Iron/Fe.

Two sets of tests are conducted: (1) the basic solution, consisting of wet screening; and (2) the complete solution, consisting of attrition washing and grain size classification, gravimetric separation and magnetic separation. XRF analysis was performed on all treatment outputs:

1. The basic solution showed a reduction of almost all residual contaminants within the desired range (Iron/Fe was reduced to 14 ppm), and only one contaminant was slightly above the desired range (Titanium/Ti).
2. The complete solution test showed 100% compliance on the first stage (attrition washing and screening), with Iron/Fe reduced to 8ppm and all other contaminants well below acceptable ranges.

These results are encouraging, confirming that very simple silica sand processing techniques meet or exceed the required specifications.

"These results confirm our initial expectations, that mother nature has performed most of the work needed to make the Santa Maria Eterna silica sand a very unique material, giving Homerun an important competitive edge in the production of antimony-free solar glass," stated Armando Farhate, COO of Homerun.

About Minerali Industriali Engineering Srl (https://www.mineraliengineering.it/)

With over 100 years of experience in the mining processing sector, Minerali Industriali Engineering is the ideal partner for the treatment of non-metallic ores, especially for the wet and dry dressing of silica sand. Solution 360: MIE offers a treatment solution for raw materials from the very first step, the geological survey of the deposit and analysis of relevant samples, to the final realization of the turnkey plant, passing from the engineering and design of each single treatment process and machine. MIE can also support its customers during the start-up stage and through personnel training. Cooperating with the leading credit institutions, we are also available to study financial solutions with our customers.

About Homerun (www.homerunresources.com / www.homerunenergy.com)

Homerun Resources Inc. (TSXV: HMR) is building the silica-powered backbone of the energy transition across four focused verticals: Silica, Solar, Energy Storage, and Energy Solutions. Anchored by a unique high-purity low-iron silica resource in Bahia, Brazil, Homerun transforms raw silica into essential products and technologies that accelerate clean power adoption and deliver durable shareholder value.

• ⁠Silica: Secure supply and processing of high-purity low-iron silica for mission-critical applications, enabling premium solar glass and advanced energy materials.
• Solar: Development of Latin America's first dedicated 1,000 tonne per day high-efficiency solar glass plant and the commercialization of antimony-free solar glass designed for next-generation photovoltaic performance.
• Energy Storage: Advancement of long-duration, silica-based thermal storage systems and related technologies to decarbonize industrial heat and unlock grid flexibility.
• ⁠Energy Solutions: AI-enabled energy management, control systems, and turnkey electrification solutions that reduce costs and optimize renewable generation for commercial and industrial customers.

With disciplined execution, strategic partnerships, and an unwavering commitment to best-in-class ESG practices, Homerun is focused on converting milestones into markets—creating a scalable, vertically integrated platform for clean energy manufacturing in the Americas.

On behalf of the Board of Directors of
Homerun Resources Inc.

"Brian Leeners"

Brian Leeners, CEO & Director
brianleeners@gmail.com / +1 604-862-4184 (WhatsApp)

Tyler Muir, Investor Relations
info@homerunresources.com / +1 306-690-8886 (WhatsApp)

FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE

The information contained herein contains "forward-looking statements" within the meaning of applicable securities legislation. Forward-looking statements relate to information that is based on assumptions of management, forecasts of future results, and estimates of amounts not yet determinable. Any statements that express predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance are not statements of historical fact and may be "forward-looking statements".

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/277724

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Homerun (HMRFF) announce on December 11, 2025 about Santa Maria Eterna sand?

Minerali Industriali Engineering completed lab-scale tests confirming the sand is suitable for antimony-free solar glass, reporting 99.7% SiO2 and Fe reduced to 8 ppm after full treatment.

How large is the NI 43-101 resource reported by Homerun for the Belmonte district (HMRFF)?

The NI 43-101 technical report cites 25.56 Mt Measured and 38.35 Mt Inferred of high-purity silica sand (>99.6% SiO2) from one asset.

What contaminant levels did MIE report for Santa Maria Eterna sand after basic and complete treatment?

Basic treatment reduced Iron to 14 ppm (Titanium slightly above range); complete treatment lowered Iron to 8 ppm with all other contaminants within acceptable ranges.

Does the MIE report confirm commercial readiness of Homerun's silica sand (HMRFF)?

The MIE lab-scale report confirms technical suitability for antimony-free solar glass but does not by itself indicate plant-scale or commercial production readiness.

What processing steps did MIE use in the complete solution for HMRFF's sand?

The complete solution used attrition washing, grain size classification, gravimetric separation and magnetic separation, with XRF analysis on outputs.

How might the MIE results affect Homerun's Bankable Feasibility Study timeline for HMRFF?

MIE's lab-scale deliverable is a key third-party input to the ongoing Bankable Feasibility Study, supporting technical assumptions used in that study.