McEwen Mines Files NI 43-101 Technical Report for Tartan Mine Project, Validating Gold Resource Estimate

McEwen Inc. filed an independent NI 43-101 technical report for its Tartan Mine Project in Manitoba, confirming 308,900 ounces of gold in indicated resources and 302,700 ounces in inferred resources as of December 31, 2025.

Miami Metrowire Staff
Business
McEwen Mines Files NI 43-101 Technical Report for Tartan Mine Project, Validating Gold Resource Estimate

McEwen Inc. (NYSE: MUX) (TSX: MUX) announced the filing of an independent National Instrument 43-101 technical report for its Tartan Mine Project in Manitoba, Canada. The report supports the previously reported mineral resource estimate, which includes 308,900 ounces of gold in indicated resources and 302,700 ounces in inferred resources, with an effective date of December 31, 2025. The filing represents a key milestone for the company as it continues to advance its portfolio of precious and base metal assets in the Americas.

The Tartan Mine Project is situated in the Flin Flon greenstone belt, a prolific mining district that has hosted significant gold and base metal production. The technical report provides a comprehensive assessment of the project's geology, mineralization, and resource estimation methodology, offering transparency to investors and stakeholders. The indicated and inferred resources underscore the potential for future development, though additional drilling and studies will be required to upgrade inferred resources to higher confidence categories.

McEwen Inc. is a diversified mining company with exposure to gold, silver, and copper production, as well as a large copper development project. The company operates mines in Nevada, Ontario, Manitoba, and Argentina, and is reactivating its El Gallo Mine in Mexico. McEwen also holds a 46.3% interest in McEwen Copper, which owns the advanced-stage Los Azules copper project in Argentina. The Los Azules project is designed to be one of the world's first regenerative copper mines, aiming for carbon neutrality by 2038. According to the last financing for McEwen Copper, the implied value of McEwen's ownership interest is US$456 million, or US$7.67 per MUX share.

In addition to its core mining assets, McEwen recently acquired a 27.3% stake in Paragon Advanced Labs Inc., a company deploying PhotonAssay units globally. PhotonAssay technology is positioned to become the new industry standard for assaying precious and base metals. Chairman and Chief Owner Rob McEwen has personally invested over US$250 million in the company and takes an annual salary of $1, aligning his interests with shareholders. McEwen is a recipient of the Order of Canada and a member of the Canadian Mining Hall of Fame, with a track record of building shareholder value, including the implementation of a dividend policy during his tenure at Goldcorp Inc.

The filing of the NI 43-101 technical report for the Tartan Mine Project provides investors with a validated resource base, supporting McEwen's strategy to grow its gold production portfolio. The company continues to advance its projects while maintaining a focus on responsible mining practices and long-term shareholder value. For the full press release, visit https://ibn.fm/pz0hW. For more information about McEwen Inc., visit the company's newsroom at https://ibn.fm/MUX.

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