Fortuna Files ESIA for Diamba Sud Gold Project, Targets PEA Completion in Q4 2025

FSM
November 01, 2025

Fortuna Mining Corp. announced the filing of an Environmental and Social Impact Assessment (ESIA) for its Diamba Sud Gold Project with the Direction de la Réglementation Environnementale et du Contrôle (DiREC) in Senegal. This filing represents a crucial milestone in the permitting process, reinforcing the company's commitment to advancing Diamba Sud towards a construction decision in the first half of 2026.

The ESIA addresses key environmental and social considerations for the project's potential development and is a prerequisite for obtaining an environmental permit. Fortuna is also progressing work on the project’s Preliminary Economic Assessment (PEA), with completion scheduled for early in the fourth quarter of 2025. A Definitive Feasibility Study (DFS) is planned to follow the PEA in the first half of 2026.

Fortuna has completed 52,110 meters of drilling in 2025, focusing on resource expansion, infill drilling, and testing new targets. This includes the delineation of a maiden Inferred Mineral Resource at Southern Arc of 3.85 million tonnes at an average gold grade of 1.57 g/t, containing 194,000 ounces of gold, with mineralization remaining open at depth and along strike.

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