LUCA MINING CONFIRMS FULL OPERATIONAL CONTINUITY AT TAHUEHUETO MINE FOLLOWING ENVIRONMENTAL INSPECTION

Rhea-AI Summary

Luca Mining (OTCQX: LUCMF) confirmed on October 9, 2025 that operations at its Tahuehueto Gold Project continue normally after an environmental inspection by PROFEPA. PROFEPA reviewed compliance with the project's Environmental Impact Authorization and placed a temporary closure notice on a single inactive legacy tailings area of 0.3 hectares pending updated technical documentation.

The notice applies only to the inactive area and does not affect ongoing mining or processing. Luca said it expects to submit remediation/technical documentation and does not anticipate operational impact; the company also reiterated ongoing activity at Tahuehueto and Campo Morado.

Positive

• Operations at Tahuehueto continue without interruption
• Temporary closure limited to a small inactive area of 0.3 hectares
• Company expects remediation plan that will not impact production

Negative

• PROFEPA placed a temporary closure notice requiring updated technical documentation
• Campo Morado declared commercial production without a comprehensive feasibility study, raising higher technical and economic risk

VANCOUVER, BC, Oct. 9, 2025 /PRNewswire/ - Luca Mining Corp. ("Luca" or the "Company") (TSXV: LUCA) (OTCQX: LUCMF) (Frankfurt: Z68) is pleased to confirm that operations at its Tahuehueto Gold Project, located in Tepehuanes, Durango, continue running normally following an inspection by Mexico's environmental authority, PROFEPA (Procuraduría Federal de Protección al Ambiente).

The inspection, part of Mexico's standard environmental oversight process, reviewed the project's compliance with its Environmental Impact Authorization (MIA) issued by SEMARNAT.

During the site review, PROFEPA requested clarification regarding a small legacy area previously used for tailings storage, located near the processing plant. This area is inactive and does not affect ongoing mining or processing operations.

As part of the administrative procedure, PROFEPA placed a temporary closure notice on that specific inactive area pending submission of updated technical documentation. Luca Mining expects to develop a remediation plan for this area that will not impact ongoing operations. "Environmental compliance and transparency are central to Luca Mining's operations," said Ramón Pérez, President of Luca Mining. "The temporary notice applies only to a non-operational section of 0.3 hectares and does not affect current production. We continue to work constructively with PROFEPA and SEMARNAT. Responsible mining is fundamental to how we operate."

Luca Mining continues to operate normally at both its Tahuehueto and Campo Morado mines, advancing production, optimization, and sustainability initiatives.

On Behalf of the Board of Directors

(signed) "Dan Barnholden"
Dan Barnholden, Chief Executive Officer

For more information, please visit:  www.lucamining.com

Cautionary Note Regarding Forward-Looking Statements

It should be noted that Luca declared commercial production at Campo Morado prior to completing a feasibility study of mineral reserves demonstrating economic and technical viability. Accordingly, readers should be cautioned that Luca's production decision has been made without a comprehensive feasibility study of established reserves such that there is greater risk and uncertainty as to future economic results from the Campo Morado mine and a higher technical risk of failure than would be the case if a feasibility study were completed and relied upon to make a production decision. Luca has completed a preliminary economic assessment ("PEA") mining study on the Campo Morado mine that provides a conceptual life of mine plan and a preliminary economic analysis based on the previously identified mineral resources (see news releases dated November 8, 2017, and April 4, 2018).

Statements contained in this news release that are not historical facts are "forward-looking information" or "forward-looking statements" (collectively, "Forward-Looking Information") within the meaning of applicable Canadian securities laws. Forward Looking Information includes, but is not limited to, disclosure regarding the Financings, the anticipated timing of closing thereof and the expected use of proceeds therefrom; and other possible events, conditions or financial performance that are based on assumptions about future economic conditions and courses of action; the timing and costs of future activities on the Company's properties, such as production rates and increases; success of exploration, development and bulk sample processing activities, and timing for processing at its own mineral processing facility on the Tahuehueto project site. In certain cases, Forward-Looking Information can be identified using words and phrases such as "plans," "expects," "scheduled," "estimates," "forecasts," "intends," "anticipates" or variations of such words and phrases. In preparing the Forward-Looking Information in this news release, the Company has applied several material assumptions, including, but not limited to, that all requisite approvals in respect of the Financings will be received, and all conditions precedent to completion of the Financings will be satisfied, in a timely manner; the Company will be able to raise additional capital as necessary; the current exploration, development, environmental and other objectives concerning the Campo Morado Mine and the Tahuehueto Project can be achieved; the program to improve mining operations at Campo Morado will proceed as planned; the continuity of the price of gold and other metals, economic and political conditions, and operations. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance, or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. There can be no assurance that Forward-Looking Information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on Forward-Looking Information. Except as required by law, the Company does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

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.

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SOURCE Luca Mining Corp.

FAQ

What did Luca Mining announce about Tahuehueto operations on October 9, 2025?

Luca said operations at Tahuehueto continue normally after a PROFEPA inspection and a temporary closure notice was limited to an inactive 0.3-hectare tailings area.

Does the PROFEPA notice on October 9, 2025 affect LUCMF production?

The company stated the notice applies only to an inactive area and does not affect ongoing mining or processing.

What is the size and status of the area subject to PROFEPA's temporary closure at Tahuehueto?

The temporary closure covers an inactive legacy tailings area of 0.3 hectares near the processing plant.

Will LUCMF submit a remediation plan after the October 9, 2025 inspection?

Luca indicated it expects to develop and submit updated technical documentation and a remediation plan that it says will not impact operations.

How does Luca describe risk at Campo Morado following the October 9, 2025 release?

The company cautioned Campo Morado entered commercial production without a full feasibility study, which it says increases technical and economic risk.