Fortuna Mining (NYSE: FSM) is on the verge of a major milestone at its Diamba Sud gold project in Senegal, with CEO Jorge Ganoza telling Reuters the company expects the final construction permit within weeks. The roughly $400 million project is targeting first gold production in 2028, marking a significant step for both the company and the West African nation's mining sector.
What is Diamba Sud?
Diamba Sud is a gold development project located in Senegal, a country that produced about 334,000 ounces of gold in 2025. Fortuna's feasibility study for the project shows a net present value of approximately $1 billion and an internal rate of return of roughly 60%, using a gold price assumption of $3,500 per ounce. At peak production, Diamba Sud is expected to churn out around 230,000 ounces annually — roughly 70% of Senegal's total 2025 output.
While those numbers look attractive on paper, mining projects often face a gap between feasibility study results and actual construction. The final construction permit is the key that unlocks the ability to move from planning to building. Without it, the project remains a promising model rather than a real mine.
Regulatory progress and political backdrop
Ganoza noted that Senegal approved the project's environmental and social impact assessment within nine months, a relatively swift timeline for such reviews. He also said recent political turbulence in the country has not altered Fortuna's plans. That stability is important for investors watching whether Senegal can offer a predictable regulatory environment for mining companies.
Senegal is already home to major gold miners like Endeavour Mining and Managem, a Moroccan mining firm. The country's ability to process permits efficiently and consistently will be a key factor in attracting further investment. Diamba Sud's permitting process is being watched as a test case for Senegal's mining governance.
Fortuna is not waiting idly. The company has already started ordering long-lead equipment to secure delivery slots, a move that signals confidence in the permit's arrival. It is also spending more than $15 million on exploration that could improve the project's economics.
What it means for investors
For investors, the difference between a feasibility study and a fully permitted project is significant. Markets tend to discount the value of mining projects until major regulatory hurdles are cleared. A final construction permit removes a big non-technical risk: the chance that the mine gets stuck in regulatory limbo.
If the permit arrives as Ganoza expects, Diamba Sud shifts from an interesting spreadsheet to a financeable project. That can lower the return lenders demand, make funding easier to line up, and allow Fortuna to commit to big-ticket equipment with long delivery times. The company's decision to order long-lead equipment ahead of the final permit shows it is already preparing for that transition.
The stakes extend beyond Fortuna. At peak, Diamba Sud's 230,000 ounces would represent a substantial portion of Senegal's gold output. Consistent permitting in Senegal becomes a meaningful input for anyone valuing Senegal-exposed miners, including operators like Endeavour and Managem.
For context on how other mining companies are advancing projects, see our coverage of Riverside Resources' drilling at Mexico's La Union project and Brightstar's drilling results at its Sandstone gold project.
While the permit is not yet in hand, the timeline Ganoza outlined suggests a decision could come soon. For now, investors will be watching for that final sign-off — and what it means for Fortuna's ability to turn a promising study into a producing gold mine.
