Fortuna secures environmental approval for Diamba Sud mine

Fortuna Mining has secured a crucial environmental decree for its Diamba Sud Gold Project in Senegal, marking a significant step forward for the development of the 724,000-ounce indicated resource. This approval, granted by Senegal’s Ministry of Environment and Ecological Transition, validates the project’s Environmental and Social Impact Assessment and underscores the strong commitment from the Senegalese government to responsible mining. With this key regulatory hurdle cleared, Fortuna is advancing early construction works and plans to finalize its feasibility study and make a final construction decision by mid-2026, positioning Diamba Sud as a potential new gold producer in the prolific Kenieba-Koudougou Inlier.

Fortuna Secures Pivotal Environmental Approval for Diamba Sud Gold Project in Senegal

In a significant development for the West African gold sector, Fortuna Mining has announced the securing of a crucial environmental decree for its Diamba Sud Gold Project in Senegal. This regulatory milestone, granted by the country’s Ministry of Environment and Ecological Transition in June 2026, confirms the approval of the project’s Environmental and Social Impact Assessment (ESIA) and signifies that the proposed mine meets stringent prevailing environmental standards while having attained social acceptance from local stakeholders. This approval follows the formal submission of Fortuna’s mining permit application to the Ministry of Energy, Petroleum and Mines earlier in February 2026, marking a decisive progression for the project.

The environmental decree is more than a procedural tick-box; it represents a critical de-risking event for any major mining development. It is the culmination of extensive studies, robust mitigation planning, and often, iterative engagement with host communities and government agencies. For Diamba Sud, this approval validates years of detailed baseline environmental studies, impact assessments, and the formulation of comprehensive management plans designed to minimize the project’s environmental footprint and maximize social benefits. The confirmation of social acceptance is particularly noteworthy, highlighting effective community engagement strategies, which are paramount for sustainable mining operations in a socially conscious global industry.

Expedited Timeline Highlights Senegal’s Mining Commitment

Jorge Ganoza, President and CEO of Fortuna Mining, underscored the efficiency of the approval process, stating, “Obtaining the environmental permit for our future Diamba Sud Gold Mine, just nine months from submission to approval, is a clear testament to the quality of our work and demonstrates that mining projects in Senegal can advance on a highly competitive timeline.” This timeline is indeed commendable in an industry often characterized by lengthy permitting processes that can span several years. Ganoza further emphasized, “This milestone also reflects the Government of Senegal’s commitment to enabling the responsible development of its mining sector.”

The expedited nature of this approval speaks volumes about Senegal’s evolving role as an attractive jurisdiction for mineral investment. A predictable and efficient regulatory framework is a key determinant for mining companies when allocating capital, especially in a competitive global landscape. It signals a government that understands the economic benefits of a thriving mining sector – including job creation, infrastructure development, and revenue generation – and is committed to facilitating responsible project development within clear environmental and social guidelines. This proactive stance contrasts with challenges faced in some other jurisdictions, potentially making Senegal an increasingly favored destination for exploration and development capital.

Diamba Sud: A Strategic Asset in a Prolific Gold Region

The Diamba Sud Gold Project itself is strategically located within the renowned Kenieba-Koudougou Inlier, a geological province celebrated for hosting significant gold deposits across eastern Senegal and western Mali. Fortuna acquired the project in September 2023, recognizing its immense potential. This region is a major gold-producing belt in West Africa, home to numerous large-scale operations and a highly prospective environment for further discoveries. The project area is specifically associated with splays from the extensive Senegal Mali Shear Zone, a major structural control for gold mineralization in the district.

Geological investigations have identified seven distinct gold deposits within the project boundaries. As of July 2025, robust resource estimates indicate a significant gold endowment, with 724,000 ounces classified as indicated resources and an additional 285,000 ounces in the inferred category. These resource classifications are crucial for project planning and investor confidence:

Indicated Resources: These resources have a higher level of geological confidence, with drilling and sampling sufficiently spaced to confirm geological continuity and adequately estimate grade and tonnage. They typically form the basis for detailed mine planning in feasibility studies.
Inferred Resources: While still representing a significant discovery, inferred resources have a lower level of geological confidence. They are estimated with limited geological evidence and sampling, and their continuity is implied rather than demonstrated. Further drilling is required to upgrade these to indicated or measured categories.

The substantial indicated resource base provides a solid foundation for the project’s economic viability and future production profile.

Projected Operations and Capital Requirements

A Preliminary Economic Assessment (PEA) published in October 2025 provided an initial snapshot of the project’s potential operational parameters and economic viability. The PEA outlined plans for a conventional open-pit mining operation, a common and cost-effective method for shallow, bulk-tonnage deposits often found in West Africa. The processing facility is envisioned as a conventional carbon-in-leach (CIL) plant, a proven and widely adopted metallurgical technique for gold extraction, known for its efficiency in recovering gold from various ore types.

The projected construction capital for the Diamba Sud project stands at $283.2 million (equivalent to C$396.79 million). This capital expenditure figure provides insight into the scale and scope of the planned operation, indicating a medium-to-large scale gold mine capable of making a meaningful contribution to Fortuna’s overall production portfolio. Such an investment underscores the company's commitment to advancing its growth pipeline and leveraging its expertise in developing and operating mines in various international jurisdictions.

Fortuna’s Strategic Portfolio Optimization

The development of Diamba Sud is part of Fortuna Mining’s broader corporate strategy to optimize its asset portfolio and focus on high-potential opportunities. This strategic realignment was evident in April 2025, when Fortuna signed a definitive share purchase agreement with Soleil Resources International (SRI). Under this agreement, Fortuna divested its ownership in Roxgold Sanu, the operator of the Yaramoko gold mine in Burkina Faso, and its other subsidiaries in a deal valued at $130 million.

Such divestitures are common in the mining industry, allowing companies to streamline operations, reduce exposure to certain political or operational risks, and free up capital to invest in core growth projects like Diamba Sud. By shedding non-core or non-strategic assets, Fortuna is concentrating its resources and management expertise on developing promising projects that align with its long-term vision, enhancing its overall financial flexibility and growth potential.

The Path Forward: From Approval to Production

With the environmental permit firmly in hand, Fortuna Mining is poised to accelerate its development activities at Diamba Sud. CEO Jorge Ganoza outlined the immediate next steps: “With this key approval in hand, we will continue advancing early construction works as we move toward the important milestones of completing the feasibility study, followed by a final construction decision in mid-2026.”

The completion of a feasibility study is a critical engineering and economic evaluation that provides a detailed blueprint for the mine’s design, costs, and projected returns. It will refine the parameters established in the PEA, firming up capital and operating expenditure estimates to a higher degree of accuracy, and enabling a definitive investment decision. A positive feasibility study outcome and a subsequent final construction decision in mid-2026 would signal the formal commitment to bring Diamba Sud into production, potentially adding a significant new source of gold to the global supply chain within the coming years.

The progressive advancement of the Diamba Sud project not only promises to bolster Fortuna’s production profile but also represents a substantial economic stimulus for Senegal. It solidifies the country's position as a significant and attractive player in the West African mining landscape, demonstrating the viability of responsible resource development to meet global demand for critical minerals. As Fortuna progresses towards a final construction decision, all eyes will be on this promising gold asset’s contribution to both the company’s future and Senegal’s economic development.