Minera Alamos Provides Update on Development Plans for Copperstone Gold Mine

About this update from Mining Americas Inc.

Toronto, Ontario--(Newsfile Corp. - November 6, 2025) - Minera Alamos Inc. (TSXV: MAI) (OTCQX: MAIFF) ("Minera Alamos" or the "Company") is pleased to announce an update on the development plans underway for its 100% owned Copperstone Mine gold project ("Copperstone Mine" or the "Project") located in Western Arizona, along the Walker Lane Belt near the town of Quartzsite. With final amendments to the existing Mine Plan of Operations ("MPO") submitted in final form in July 2025 and with approvals expected before year end, the Company is concurrently preparing an updated technical study that would allow for a positive Board decision for a full restart of the Copperstone project. Highlights: *1 "National Instrument 43-101 Technical Report: Preliminary Economic Assessment for the Copperstone Project, La Paz County, Arizona, USA" with an effective date of February 6, 2025. Darren Koningen, CEO of Minera Alamos commented : "The impact of current gold prices on the overall economics of the Copperstone mine cannot be overstated. While the Company awaits the receipt of the final approvals for the Copperstone project our technical teams have been extremely busy planning for the fast-track restart of operations while gaining a better understanding of the significant resource upside potential for the entire project area. The Company is concurrently preparing an updated technical report to quantify these impacts on the overall restart plans while also ensuring that the rebuilt processing facilities incorporate maximum operating flexibility to accommodate future growth for the project. Combining this work with the new geological insights offers an exciting opportunity for the Copperstone mine to significantly increase the Company's gold production and free cash flow profile well beyond the previously published PEA expectations." Permitting The final version of the Mine Plan of Operations ("MPO") amendment for the Copperstone project has been submitted to meet the requirements of Title 43, Subpart 3809 of the United States Code of Federal Regulations, as administered by the U.S. Bureau of Land Management ("BLM"). This application represents the primary permitting milestone for a restart of operations at the site and is expected to be received prior to YE-2025. While awaiting its receipt a number of other minor amendments to other existing site permits are also being prepared. This includes: Around the end of 2025, the Company is expected to have secured all required permit amendments for the Copperstone project to support a planned restart of gold mining operations in 2026. Engineering and Development Activities Management has identified several opportunities to enhance the value of the Copperstone project that will be evaluated during the current development phase. The Company is considering various engineering, procurement, construction, and management approaches, including hybrid models that maximize the use of internal expertise to ensure an efficient and cost-effective transition from development to mining operations. Additional opportunities include: Exploration Activities A recent review of the Copperstone gold project was completed by the Company and comprised inspections of available drill core along with field investigations of the gold mineralization as exposed in the open pit and underground workings. The main results of this program are summarized below. Figure 1. Copperstone drillhole identified mineralization (looking NNW) To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/4183/273398_minera%20alamos%201.jpg A Phase 1 drill program is currently being finalized for the Copperstone project. The program is expected to begin in Q1, 2026 and will initially focus on shallow mineralization adjacent to the current historic open pit and areas along strike and at depth of the currently outlined underground resources. While this work program is underway the Company's exploration team will also be evaluating the potential of new mineralized structures outside of the current area which had previously been identified by historic exploration drill programs. PEA Cautionary Note Readers are cautioned that the PEA is preliminary in nature and includes inferred resources that are considered too speculative to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the PEA results will be realized. Mineral resources are not mineral reserves and do not have demonstrated economic viability. Additional work is needed to upgrade these mineral resources to mineral reserves. Qualified Person Mr. Darren Koningen, P. Eng., Minera Alamos' CEO, is the Qualified Person responsible for the technical content of this press release under National Instrument 43-101. About Minera Alamos Minera Alamos is a gold production and development Company. The Company owns and operates the Pan heap leach gold mine in Nevada and owns two development projects near the Pan mine. The Company also owns the Copperstone mine and associated infrastructure in La Paz Country, Arizona, an advanced development asset with a permitted plan of operations that can be developed in parallel with planned project advancements in Mexico. The Company maintains a portfolio of high-quality Mexican assets, including the 100%-owned Santana open-pit, heap-leach mine in Sonora. The 100%-owned Cerro de Oro oxide gold project in northern Zacatecas has considerable past drilling and metallurgical work completed and the proposed mining project is currently being guided through the permitting process by the Company's permitting consultants. The La Fortuna open pit gold project in Durango (100%-owned) has a positive, robust PEA completed, and the main Federal permits are in place. Minera Alamos is built around its operating team that together brought three open pit heap leach gold mines into successful production in Mexico over the last 14 years. The Company's strategy is to develop very low capex assets while expanding the projects' resources and continuing to pursue complementary strategic acquisitions. For Further Information, Please Contact:   Caution Regarding Forward-Looking Statements This press release includes certain "forward-looking information" within the meaning of applicable Canadian securities legislation. All information herein, other than information of historical fact, constitutes forward-looking information. Forward-looking information is frequently, but not always, identified by words such as "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible", and similar expressions, or statements that events, conditions, or results "will", "may", "could", or "should" occur or be achieved. This information is based on information currently available to Minera Alamos and Minera Alamos provides no assurance that actual results will meet management's expectations. The forward-looking information is based on assumptions and addresses future events and conditions that, by their very nature involve inherent risks and uncertainties. Actual results could differ materially from those currently anticipated in forward-looking information for many reasons. Minera Alamos' financial condition and prospects could differ materially from those currently anticipated in forward-looking information for many reasons such as: an inability to receive requisite permits for mine operation, exploration or expansion; an inability to finance and/or complete updated resource and reserve estimates and technical reports which support the technical and economic viability of mineral production; changes in general economic conditions and conditions in the financial markets; changes in demand and prices for minerals; litigation, legislative, environmental and other judicial, regulatory, political and competitive developments; technological and operational difficulties encountered in connection with Minera Alamos' activities; and other matters discussed in this press release and in filings made with securities regulators. This list is not exhaustive of the factors that may affect any of Minera Alamos' forward-looking information. These and other factors should be considered carefully, and readers should not place undue reliance on Minera Alamos' forward-looking information. Minera Alamos does not undertake to update any forward-looking information that may be made from time to time by Minera Alamos or on its behalf, except in accordance with applicable securities laws. NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN THE 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/273398

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