McEwen Mining Files NI 43-101 Technical Report for Tartan Mine Project, Reporting 308,900 oz Gold Indicated

McEwen Inc. (NYSE: MUX) (TSX: MUX) has announced the filing of an independent National Instrument 43-101 technical report for its Tartan Mine Project in Manitoba. The report supports the previously reported mineral resource estimate of 308,900 ounces of gold in indicated resources and 302,700 ounces in inferred resources, with an effective date of Dec. 31, 2025. This filing is a key step in advancing the project, which is part of McEwen's strategy to expand its gold production base in the Americas.

The Tartan Mine Project is located in the Flin Flon region of Manitoba, a prolific mineral-rich area where McEwen already operates. The company's gold and silver mines are situated in other significant mining districts, including the Cortez Trend in Nevada, the Timmins district in Ontario, and the Deseado Massif in Argentina. Additionally, McEwen is reactivating its gold-silver El Gallo Mine in Mexico. This diversification across multiple jurisdictions reduces geographic risk and provides exposure to different commodity cycles.

McEwen also holds a 46.3% interest in McEwen Copper, which owns the advanced-stage Los Azules copper development project in San Juan province, Argentina. According to the last financing for McEwen Copper, the implied value of McEwen's ownership interest is US$456 million (US$7.67 per share). The Los Azules project is designed to be one of the world's first regenerative copper mines and aims to be carbon neutral by 2038. Its Feasibility Study results were announced in a press release dated October 7, 2025.

In addition to its mining assets, McEwen recently purchased 27.3% of Paragon Advanced Labs Inc., a newly listed public company deploying PhotonAssay units globally. This technology is poised to become the new industry standard for assaying precious and base metals, and Paragon aims to be one of the leading service providers in this field.

Chairman and Chief Owner Rob McEwen has invested over US$250 million personally and takes a salary of $1 per year, aligning his interests with shareholders. He is a recipient of the Order of Canada, a member of the Canadian Mining Hall of Fame, and a winner of the EY Entrepreneur of the Year (Energy) award. His objective is to build MUX's profitability, share value, and ultimately implement a dividend policy, as he did while building Goldcorp Inc.

The filing of the NI 43-101 technical report for the Tartan Mine Project is significant because it provides investors with a standardized, independent assessment of the project's mineral resources. This transparency is crucial for informed investment decisions and demonstrates McEwen's commitment to advancing its assets. With a growing base of gold and silver production, a large copper development project, and strategic investments in innovative technologies, McEwen is positioning itself for long-term value creation. For more information, visit the company's newsroom at https://ibn.fm/MUX.