06:13 AM EDT, 10/08/2025 (MT Newswires) -- McEwen Copper, 46.4% owned by McEwen , said overnight it received "positive" results from an independent feasibility study for its 100%-owned Los Azules copper project in San Juan, Argentina. Shares of McEwen were up 3.5% in U.S. premarket trading Wednesday.

The study confirmed Los Azules as a "long-life, low-cost producer of high-purity copper cathodes with strong economic returns and sustainability," the company said in a statement. McEwen said the project design advances Los Azules toward construction readiness within a framework that minimizes its environmental footprint.

Project risk has been further reduced through a strategic collaboration agreement with the International Finance Corporation to potentially lead debt financing and other funding proposals for infrastructure and construction, the company added.

With these results, Los Azules is positioned to become a supplier of responsibly produced copper, critical to the global energy transition toward a low-carbon sustainable future, MUX said.

"The Los Azules Feasibility Study is more than a technical milestone -- it's a blueprint for the future of copper mining. We have delivered a plan for a long-life asset that will play a role in the world's clean-energy transition. Copper is the foundation of electrification and the modern world, and Los Azules is ready to contribute to that global supply chain, responsibly, efficiently, and profitably," said Rob McEwen, chairman and chief owner of McEwen.

"With this Feasibility Study, our team has transformed the geological potential of Los Azules into a clear, actionable development plan. This work gives us confidence in the project's design, costs, and schedule, providing the foundation for the next stage of growth," he added.

Michael Meding, vice president of McEwen Copper and general manager of Los Azules, said: "Having significant experience with large-scale construction and mining operations in Argentina, I am confident that we have the right plan, the right team, and the right partnerships to develop Los Azules. Together with our local communities and government partners, we aim to create Argentina's first regenerative copper mine -- a model for responsible and innovative mining."

Shares in MUX fell more than 3% in Canada yesterday.