Geomechanics.io

  • Free Tools
Sign UpLog In
AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy

Geomechanics.io

Geomechanics, Simplified.

© 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

    Allied Gold’s Sadiola expansion: throughput and circuit design notes for mine planners

    December 22, 2025|

    Reviewed by Joe Ashwell

    Allied Gold’s Sadiola expansion: throughput and circuit design notes for mine planners

    First reported on MINING.com

    30 Second Briefing

    Allied Gold has started Phase 1 expansion at the Sadiola mine in Mali, bringing a new fresh ore comminution circuit online to lift annual output to 200,000–230,000 oz, up 17–30% on 2023. The upgrade increases higher-grade fresh ore in mill feed from about 20% to as much as 60% at an expected throughput of 5.7 Mt/y, with the first full quarter of higher fresh-ore volumes due in Q1 2026. Engineering is advancing for a 2026 pre-leach thickener and plant-wide control system upgrade, underpinning a Phase 2 build-out through 2029 and supporting group guidance above 375,000 oz in 2025.

    Technical Brief

    • Phase 1 fresh-ore comminution circuit is now operational at Sadiola, processing ore through a new line.
    • Allied targets about 60,000 oz from Sadiola in Q4 2025, ~40% above earlier 2025 quarterly averages.
    • Company-wide Q4 2025 production is forecast above 113,000 oz, a 13% year-on-year increase.
    • Pre-leach thickener installation is scheduled for 2026, adding fresh and transitional ore processing capacity.
    • A plant-wide control system upgrade is being engineered to tighten process control and reduce operating costs.
    • Phase 2 expansion is planned to start late 2026 and extend through to 2029 at Sadiola.
    • Output growth also depends on strong contributions from Côte d’Ivoire operations, particularly the Bonikro mine.
    • Allied maintains 2025 guidance above 375,000 oz, signalling confidence in ramp-up and integration of both phases.

    Our Take

    Shifting the Sadiola mill feed from about 20% to 60% fresh ore while lifting throughput to 5.7 Mt/y signals a move towards a higher-grade, harder-ore regime where comminution power and liner wear management will become more critical for Allied Gold’s operating costs.

    The projected 17–30% production uplift versus 2023, with a 40% step-up in Q4 2025 and 13% year-on-year company-wide growth, suggests Allied Gold is positioning Sadiola and Bonikro to compete with mid-tier African gold producers that our database shows are also chasing multi-year, staged debottlenecking rather than single-step expansions.

    With Phase 2 at Sadiola running through to 2029 in Mali and Bonikro in Côte d’Ivoire, Allied Gold is concentrating growth in West Africa, a region that in our recent gold coverage has combined relatively supportive mining codes with elevated security and political risk that can affect scheduling and contractor availability.

    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

    Mining
    about 16 hours ago

    Tapojärvi at Sotkamo Silver mine: continuity and risk notes for production engineers

    Tapojärvi has restarted as main mining contractor at Sotkamo Silver’s underground silver mine in Finland, resuming a role it previously held from 2018 to 2023 under a new agreement signed in June 2025. The contract covers full-scale production mining services, including drilling, blasting, loading and haulage in a familiar orebody and infrastructure, allowing rapid ramp-up using existing site knowledge and established operating procedures. For geotechnical and production engineers, continuity in contractor, ground control methods and equipment fleet should reduce interface risk and support stable output planning.

    STRACON’s Los Bronces tailings dam contract: lifecycle model insights for engineers
    Mining
    about 23 hours ago

    STRACON’s Los Bronces tailings dam contract: lifecycle model insights for engineers

    STRACON has secured an integrated engineering, construction, financing and long-term operations and maintenance contract for the Pérez Caldera Tailings Dam at Anglo American Sur’s Los Bronces copper operation in Chile’s Lo Barnechea district. The scope combines dam design and build with funding and multi-year O&M, signalling a bundled delivery model for critical tailings infrastructure rather than separate EPC and operator contracts. For geotechnical and tailings engineers, this points to growing demand for contractors capable of lifecycle stewardship under Chile’s stringent post-Brumadinho regulatory environment.

    Metso’s third orders for Almalyk copper smelter: design and ramp-up notes for engineers
    Mining
    2 days ago

    Metso’s third orders for Almalyk copper smelter: design and ramp-up notes for engineers

    Metso has booked the third tranche of orders for JSC Almalyk Mining and Metallurgical Complex’s copper smelter project in Uzbekistan, following equipment and project services contracts announced on 9 August 2024. The first two tranches, totalling €146 million, were booked in Q4 2024, with the latest booking covering additional core process equipment and associated services for the greenfield smelter complex. The staged order intake signals a multi-phase build-out where process design, commissioning support and long-lead items will be critical for throughput, energy performance and sulphur capture compliance.

    Related Industries & Products

    Mining

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