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Mineros S.A. Obtains Key Permit for Underground Mine Construction at Porvenir Project, Nicaragua

Mine Development & Operations Permits & Approvals

Mineros S.A. Obtains Key Permit for Underground Mine Construction at

Porvenir Project, Nicaragua

MEDELLÍN, Colombia--(BUSINESS WIRE)--May 7, 2025--Mineros S.A. (TSX: MSA,

MINEROS: CB) (“Mineros” or the “Company”) is pleased to announce that its wholly owned

subsidiary, HEMCO Mineros Nicaragua S.A., has obtained the Forest Harvesting Permit that it

requires to commence the construction phase for its underground mine at the Porvenir Project.

The Porvenir Project is in the community of Vesubio, municipality of Bonanza, within the North

Caribbean Coast Autonomous Region (the “RACCN”) of Nicaragua, a region with a rich mining

history.

This crucial approval marks a significant milestone, enabling the start of mine site preparation

and underground development work. It represents a major step towards realizing the Porvenir

Project. The approval underscores Mineros' and HEMCO's unwavering commitment to rigorous

environmental standards, and transparent community engagement.

This permit specifically covers mining activities only and does not constitute an operational

permit. Further comprehensive environmental and regulatory permits, including those from the

Ministry of the Environment and Natural Resources (MARENA) for plant operations, are

required before any processing activities can commence.

“Receiving the permit for construction of the Porvenir underground mine is a major step

forward,” said David Londoño, President and CEO of Mineros. “We appreciate the RACCN’s

constructive review process and look forward to advancing the project in line with our

responsible mining principles.”

Project Background and Community Commitment

The Bonanza region has a long history associated with mining. Mineros, through HEMCO, has a

well-established presence in Nicaragua, operating the nearby Pioneer and Panama mines. The

Company is committed to responsible resource development that generates sustainable socio-

economic benefits. Throughout the development of the Porvenir Project, Mineros has engaged

with local communities and authorities and remains dedicated to environmental stewardship and

maximizing local benefits, including employment and procurement opportunities, as the project

progresses through construction and towards potential future operations.

Next Steps and Future Permitting

Following receipt of this permit, Mineros will advance technical studies and detailed planning

for the project's operational phase infrastructure. Key next steps include:

Progressing Towards Optimized Pre-Feasibility Plan: The Company is actively working on

updating the project assumptions, including a geometallurgical update based on the 2023 test

work, which is scheduled to be completed by the end of 2025.

Final Engineering Designs: Completing and submitting final, detailed engineering designs for

essential operational components, such as the beneficiation (processing) plant, the Tailings

Storage Facility (TSF), and the Waste Rock Storage Facility (WRSF), to the relevant authorities

(including MARENA) as required for subsequent operational permit applications.

Operational Permit Applications: Continuing the application processes for all necessary

operational permits.

Additional Permits Required Before Operation

Commercial operation of the Porvenir mine remains contingent upon obtaining several additional

permits, including but not limited to:

• Environmental Permit for Operations (covering Beneficiation Plant, Tailings Storage

Facility, Waste Rock Storage Facility, and overall site operations): The application

specifically for the Beneficiation Plant and its associated TSF is currently in process with

MARENA. Permits covering the waste rock facility and other operational aspects will be

sought subsequently.

• Occupational Health and Safety License: To be secured following the completion of mine

and plant construction.

• Water Development Concession: Requires a completed hydrological study as part of the

application.

• Wastewater Discharge Permit: For managing domestic and industrial effluents according

to regulatory standards.

This permit framework will ultimately cover tailings management, waste rock management,

water use, air quality controls, and concentrate handling/export.

QUALIFIED PERSON

The scientific and technical information contained in this news release has been reviewed and

approved by Luis Fernando Ferreira de Oliveira, MAusIMM CP (Geo), Mineral Resources and

Reserves Manager for Mineros S.A., who is a qualified person within the meaning of NI 43-101.

ABOUT MINEROS S.A.

Mineros is a Latin American gold mining company headquartered in Medellin, Colombia. The

Company has a diversified asset base, with mines in Colombia and Nicaragua, and a pipeline of

development and exploration projects.

The board of directors and management of Mineros have extensive experience in mining,

corporate development, finance, and sustainability. Mineros has a long track record of

maximizing shareholder value and delivering solid annual dividends. For 50 years Mineros has

operated with a focus on safety and sustainability at all its operations.

Mineros’ common shares are listed on the Toronto Stock Exchange under the symbol “MSA”,

and on the Colombia Stock Exchange under the symbol “MINEROS”.

Election of Directors – Electoral Quotient System

The Company has been granted an exemption from the individual voting and majority voting

requirements applicable to listed issuers under Toronto Stock Exchange policies, on grounds that

compliance with such requirements would constitute a breach of Colombian laws and regulations

which require the directors to be elected on the basis of a slate of nominees proposed for election

pursuant to an electoral quotient system. For further information, please see the Company’s most

recent annual information form, available on the Company’s website at

https://www.mineros.com.co/ and from SEDAR+ at www.sedarplus.com.

Forward-Looking Statements

This news release contains "forward-looking information" within the meaning of applicable

securities laws. Forward-looking information includes statements that use forward-looking

terminology such as "may", "could", "would", "will", "should", "intend", "target", "plan",

"expect", "estimate", "anticipate", "believe", "continue", "potential", "view" or the negative or

grammatical variation thereof or other variations thereof or comparable terminology. Such

forward-looking information includes, without limitation, statements with respect to expected

applications for and receipt of regulatory approvals, the expected sufficiency of such regulatory

approvals to support construction activities at the Porvenir Project, the Company’s plans and

expectations with respect to the future development of the Porvenir Project and the timing

therefor.

Forward-looking information is based upon estimates and assumptions of management in light of

management’s experience and perception of trends, current conditions and expected

developments, as well as other factors that management believes to be relevant and reasonable in

the circumstances, as of the date of this news release including, without limitation, assumptions

about: favourable equity and debt capital markets; the ability to raise any necessary additional

capital on reasonable terms to advance the production and development of the Porvenir Project;

future prices of gold and other metal prices; the timing and results of exploration and drilling

programs, and technical and economic studies; the development of the Porvenir Project;

completion of its drilling programs; the accuracy of any Mineral Reserve and Mineral Resource

estimates; the geology of the Porvenir Project being as described in the applicable technical

report; operating conditions being favourable such that the Company is able to operate in a safe,

efficient and effective manner; political and regulatory stability; the receipt of governmental,

regulatory and third party approvals, licenses and permits on favourable terms; obtaining

required renewals for existing approvals, licenses and permits on favourable terms; requirements

under applicable laws; sustained labour stability; stability in financial and capital goods markets;

inflation rates; availability of labour and equipment; and positive relations with local groups.

While the Company considers these assumptions to be reasonable, the assumptions are

inherently subject to significant business, social, economic, political, regulatory, competitive and

other risks and uncertainties, contingencies and other factors that could cause actual actions,

events, conditions, results, performance or achievements to be materially different from those

projected in the forward-looking information. Many assumptions are based on factors and events

that are not within the control of the Company and there is no assurance they will prove to be

correct.

For further information of these and other risk factors, please see the “Risk Factors” section of

the Company’s annual information form dated March 31, 2025, available on the Company’s

website at https://www.mineros.com.co/ and SEDAR+ at www.sedarplus.com.

Contacts

Ann Wilkinson

VP of Investor Relations

+1 (647) 496-3011

[email protected]

Juan Obando

Director, Investor Relations

(+57) 574 266 5757

[email protected]

Bettina Filippone

Renmark Financial Communications Inc.

+1 (514) 939-3989 or +1 (212) 812-7680

[email protected]