Geomechanics.io

  • Free Tools
Sign UpLog In
Built byBoxcut Studio

Geomechanics.io

Geomechanics, Streamlined.

© 2026 Geomechanics.io. All rights reserved.

Geomechanics.io

CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

Industries

MiningConstructionTunnelling

Company

Terms of UsePrivacy PolicyLinkedIn
    Projects
    Contract Award

    Fortuna’s high-grade Diamba Sud hits in Senegal: project and pit design notes for engineers

    October 14, 2026|

    Reviewed by Joe Ashwell

    Fortuna’s high-grade Diamba Sud hits in Senegal: project and pit design notes for engineers

    First reported on MINING.com

    30 Second Briefing

    Fortuna Mining has reported high-grade intercepts at the Southern Arc zone of its Diamba Sud gold project in Senegal, including 40.8 metres at 3.9 g/t from 228 metres (hole DSR1149) and 12 metres at 6.8 g/t from 96 metres (hole DSDD699), extending mineralisation at depth and along strike. Since February, 196 RC and diamond holes totalling 36,592 metres have been drilled, with Southern Arc results to be folded into year-end resource and reserve updates and further step-outs planned for 2027. A C$11 million 2026 drilling campaign with six rigs is also testing the Kabewest target 2.3 km from the proposed Diamba Sud plant, ahead of a planned 2028 production start and a final investment decision this quarter.

    Technical Brief

    • Diamba Sud’s April 2026 probable reserve stands at 20.5 Mt at 1.75 g/t Au (1.15 Moz).
    • Fortuna targets gold production start in Q2 2028, contingent on a near-term final investment decision.
    • Feasibility work indicates an after-tax NPV5 of US$1 billion at US$3,500/oz gold.
    • The same study reports a 60% after-tax IRR and a one-year post-commissioning payback period.
    • Diamba Sud is planned to contribute to lifting Fortuna’s group output to 500 koz Au-eq by 2028.
    • Six rigs are active in a C$11 million 2026 drilling campaign, including at Kabewest near Diamba Sud.
    • Kabewest lies 2.3 km from the proposed Diamba Sud plant, favouring shared processing and infrastructure.
    • Geological logging at Kabewest notes breccia-hosted mineralisation and alteration styles analogous to Diamba Sud.

    Our Take

    With Diamba Sud already contributing about 18% of Fortuna Mining’s net asset value and an NPV of roughly US$1 billion, the new high‑grade Southern Arc intercepts suggest upside that could rebalance capital allocation away from mature Latin American assets highlighted in Fortuna’s 2026 spending plans.

    The proximity of Kabewest (2.3 km from the planned Diamba Sud plant site) combined with Fortuna’s recent US$200 million acquisition of the Bambadji properties from Barrick and IAMGOLD points to a hub‑and‑spoke development model in eastern Senegal, where multiple satellite pits could be trucked to a single central plant.

    In our database of 1259 Mining stories, West Africa gold pieces featuring Senegal and Côte d’Ivoire – including Fortuna’s Séguéla expansion – increasingly emphasise rapid permitting and build times, which likely underpins the aggressive drilling pace at Diamba Sud (196 holes and six rigs) ahead of the targeted 2028 horizon.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

    Related Articles

    Electra–WMC Ontario cobalt refinery deal: cashflow and offtake lens for engineers
    Mining
    about 2 hours ago

    Electra–WMC Ontario cobalt refinery deal: cashflow and offtake lens for engineers

    Electra Battery Materials has signed a five-year working-capital and commercial partnership term sheet with Swiss commodities trader WMC Group AG to finance cobalt feedstock purchases and market battery-grade cobalt sulfate from its Temiskaming Shores refinery in northern Ontario. The deal covers logistics management, inventory working capital and exclusive marketing of output up to the plant’s nameplate capacity as Electra restarts North America’s only cobalt sulfate refinery, backed by US and Canadian government funding. The structure is aimed at smoothing the operating cash cycle as the project moves from construction and commissioning into production.

    SSR–Roxmore $464M deal: Nevada gold mine capex and NPV lens for planners
    Mining
    about 2 hours ago

    SSR–Roxmore $464M deal: Nevada gold mine capex and NPV lens for planners

    SSR Mining will acquire Nevada-focused Roxmore Resources for C$660.1 million in cash, securing the Converse open-pit project 6 km west of its Marigold mine, where a PEA outlines 250,000 oz. per year over 15 years, with a post-tax NPV of $2.7 billion at $3,600/oz. gold and a 42.8% IRR. Converse, hosting 103 million indicated tonnes at 0.65 g/t and 218 million inferred tonnes at 0.43 g/t, could lift SSR’s US output to 350,000–400,000 oz. annually from 2033–2042, despite an $829 million initial capex. In parallel, an updated Marigold plan extends mine life to 20 years, boosts probable reserves 43% to 4.6 million oz., and more than triples post-tax NPV to $3.3 billion, with life-of-mine capex rising to $1.3 billion and Buffalo Valley (700,000 oz. reserves) feeding first ore from 2029.

    The Ore Wars 2002–2026: iron ore price cycles mapped for mine planners
    Mining
    about 2 hours ago

    The Ore Wars 2002–2026: iron ore price cycles mapped for mine planners

    Iron ore’s journey from a $13/t, annually negotiated benchmark in 2002 to a daily traded futures market peaking at $237.57/t in May 2021 is mapped in MINING.COM’s “Ore Wars” interactive, tracking 49 key inflection points. The timeline covers BHP’s failed $140 billion bid for Rio Tinto, the collapse to $37/t in December 2015, the Samarco and Brumadinho tailings disasters, and China’s push for yuan‑denominated pricing. For mine planners and marketers, it neatly links price shocks to supply surges, port stockpiles, freight rates and single‑buyer risk.

    Related Industries & Products

    Mining

    Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.

    Construction

    Quality control software for construction companies with material testing, batch tracking, and compliance management.

    CMRR-io

    Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.

    HYDROGEO-io

    Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.

    GEODB-io

    Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.

    AllGeotechnicalInfrastructureHazardsEnvironmental