McEwen Mining has strengthened its long-term growth outlook after a new pre-feasibility study confirmed the strong economic potential of the Grey Fox gold project in Ontario. The study indicates that the development could significantly increase production while extending the life of the company’s Fox Complex near Timmins by approximately 15 years.
The project is expected to become a cornerstone asset within one of Canada’s most established gold mining districts, supporting McEwen’s strategy to expand annual production and capitalize on strong precious metals markets.
Pre-Feasibility Study Highlights Strong Production Potential
According to the newly released study, Grey Fox is forecast to produce an average of 87,000 ounces of gold annually between 2028 and 2041. Production is expected to peak at approximately 100,000 ounces in 2029, making the project a significant contributor to McEwen Mining’s future output profile.
The results reinforce Grey Fox’s position as a key development project capable of transforming the company’s operations in Ontario. Currently, the Fox Complex relies primarily on ore from the Froome Mine, which is processed through the nearby Stock Mill. Once operational, Grey Fox would provide a new long-term source of high-quality ore and help maintain production levels well into the next decade.
Supporting Ambitious Gold Production Targets
The Grey Fox development plays an important role in McEwen Mining’s broader corporate strategy. The company has set a target of increasing total annual production to between 250,000 and 300,000 gold equivalent ounces (GEOs) by the end of the decade. The addition of Grey Fox is expected to provide a substantial contribution toward achieving that objective.
As demand for gold continues to benefit from economic uncertainty, central bank buying, and investor interest in safe-haven assets, long-life projects such as Grey Fox are becoming increasingly valuable within the global mining sector.
Project Economics Strengthened by High Gold Prices
The pre-feasibility study estimates an initial capital investment of approximately $181 million to bring the project into production. McEwen stated that, given current gold prices exceeding $4,000 per ounce, the project is expected to be funded largely through internal cash generation rather than requiring significant external financing.
Even under a more conservative gold price assumption of $3,000 per ounce, the project demonstrates robust economics.
Key financial highlights from the study include:
- Post-tax Net Present Value (NPV): $282 million
- Internal Rate of Return (IRR): 25%
- Payback Period: 4.6 years
- Life-of-Mine All-In Sustaining Cost (AISC): $2,212 per ounce
These figures suggest that Grey Fox could remain profitable even during periods of lower gold prices while offering substantial upside in a stronger commodity market.
Nearly Two Million Ounces of Gold Resources Identified
The study is based on an indicated mineral resource containing nearly 2 million ounces of gold. Current estimates outline approximately 18.8 million tonnes grading 3.28 grams of gold per tonne, providing a substantial resource base for future mine development. Of the total resource, approximately 980,000 ounces have already been converted into reserves and incorporated into the mine plan.
McEwen emphasized that these reserves represent only about 40% of the total resource inventory, leaving considerable potential for future expansion.
Exploration Could Unlock Additional Gold Reserves
One of the most attractive aspects of the Grey Fox project is its exploration upside. Management believes additional drilling could significantly increase reserves through the conversion of existing resources and the discovery of new mineralized zones.
To support this effort, the company has allocated approximately $5 million for further exploration and drilling programs. Successful resource conversion could extend the mine life beyond the current plan and further improve project economics.
Construction Timeline Advances Toward Development
With the pre-feasibility study completed, McEwen is preparing for the next stages of project development.
Upcoming work will focus on:
- Detailed engineering and design activities
- Procurement of long-lead equipment and materials
- Amendments to water permits
- Updates to mine closure plans
- Regulatory approvals and environmental compliance
Construction is expected to begin in spring 2027, with underground mine development scheduled to commence during the second half of that year.
If development proceeds according to schedule, commercial production could begin in 2029.
Underground Mining Strategy Designed for Efficiency
The Grey Fox operation is planned as a combination of two separate underground mining systems, each accessed through independent portals. Ore extracted from the underground workings will be transported to the surface and then hauled to McEwen’s existing Stock Mill, where it will be processed alongside material from the Stock Mine.
This approach allows the company to leverage existing infrastructure, reducing development costs and accelerating project implementation. Using established processing facilities also minimizes capital requirements compared with building an entirely new processing plant.
Strong Gold Recovery Rates Support Project Viability
Laboratory testing conducted as part of the pre-feasibility study indicates that Grey Fox ore should achieve a gold recovery rate of approximately 87.5%. This recovery level supports the project’s economic outlook and confirms the suitability of existing processing facilities for handling future production.
Efficient recovery rates are critical for maximizing revenue and ensuring long-term profitability, particularly as mining operations move deeper underground.
Strengthening Canada’s Position as a Leading Gold Producer
The development of Grey Fox further reinforces Ontario’s reputation as one of the world’s premier gold-producing regions. The Timmins mining district has a long history of successful gold production and remains one of Canada’s most important centers for exploration and mine development. As companies continue to invest in new projects and expand existing operations, the region is expected to remain a major contributor to both Canadian and global gold supply.
Grey Fox Poised to Become a Long-Term Value Creator
The latest pre-feasibility study positions Grey Fox as one of the most important growth opportunities in McEwen Mining’s portfolio.
With strong economics, significant resource potential, existing infrastructure advantages, and a projected mine life extending well into the 2040s, the project offers a compelling pathway for production growth and value creation.
If future exploration successfully expands reserves and development remains on schedule, Grey Fox could become a cornerstone asset within Canada’s gold sector and a major contributor to McEwen Mining’s long-term success.
