Geomechanics.io

  • Free Tools
Sign UpLog In

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
    AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy
    Projects
    Contract Award

    Rio Tinto’s Nemaska lithium plant slowdown: schedule and feed risks for mine planners

    March 13, 2026|

    Reviewed by Tom Sullivan

    Rio Tinto’s Nemaska lithium plant slowdown: schedule and feed risks for mine planners

    First reported on MINING.com

    30 Second Briefing

    Rio Tinto is slowing construction of the Nemaska lithium hydroxide conversion plant at Bécancour, Quebec, cutting its contractual workforce by about 50% while keeping several hundred workers on site, but still targets commissioning this decade and first production in 2028. The plant is roughly 70% complete, designed for 32,000 tonnes per year of lithium hydroxide, with Rio planning US$300 million of investment alongside a C$200 million commitment from the Quebec government, which retains 46.1%. Nemaska’s integrated project is based on a 26‑year Whabouchi open‑pit/underground mine producing 200,000 tonnes of spodumene concentrate annually, though Rio is reassessing feed against its Galaxy hard rock project, with a decision due in H2 2026.

    Technical Brief

    • Construction pace at Bécancour is being reduced specifically to complete process and plant optimisation work.
    • Contractual workforce on site will be cut by about 50%, leaving “several hundred” workers active.
    • Some construction and installation activities will continue, while others are explicitly paused or deferred to later phases.
    • Rio Tinto became Nemaska’s majority owner in mid‑February, lifting its stake to 53.9%.
    • The Quebec government retains 46.1% of Nemaska and has pledged C$200 million alongside Rio’s spend.
    • A Bloomberg-sourced timeline suggests full construction restart at Bécancour is now expected in 2027.
    • Whabouchi is planned as a 26‑year combined open‑pit/underground operation producing 200,000 t/y of concentrate.
    • Rio is formally benchmarking Whabouchi feed against its Galaxy hard‑rock lithium project in James Bay, decision due H2 2026.

    Our Take

    With Rio Tinto already prominent across several recent Top 50 and Power Rankings pieces in our database, the Nemaska Bécancour lithium hydroxide plant in Québec strengthens its positioning in ‘critical minerals’ alongside its traditional iron ore and copper base, rather than as a one-off battery metals play.

    The 53.9%/46.1% Rio Tinto–Québec government ownership split at Nemaska is unusually balanced for a major’s upstream lithium asset in our coverage, which likely gives the province greater leverage over pacing and localisation of the Whabouchi–Bécancour value chain than in more typical incentive-only regimes.

    Designing Whabouchi for a 26‑year open-pit and underground life aligns with other long-life lithium entries in the 109 lithium/lithium hydroxide keyword-matched pieces, signalling that Rio Tinto is planning Nemaska as a structural, not opportunistic, supplier into North American and European battery chains even through price cycles.

    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

    Ascension’s deep-underground critical minerals tech: process insights for mine planners
    Mining
    about 13 hours ago

    Ascension’s deep-underground critical minerals tech: process insights for mine planners

    Oxford University spinout Ascension has raised £1.7 million in new funding, combining a £670,490 Innovate UK Growth Catalyst grant with £1 million from UKI2S, Oxford Science Enterprises and East X, bringing total capital raised to £6.2 million. The company’s Selective Recovery programme targets rare earths and other critical minerals in deep volcanic glass, aiming to separate metals in situ and cut surface processing stages. Ascension’s process uses natural geothermal heat in volcanic rock deposits, avoiding excavation, high-temperature surface processing and associated land disturbance.

    Mining
    about 15 hours ago

    Holcim UK’s 20 LiuGong 870HE loaders: quarry power and layout implications for engineers

    Holcim UK is deploying 20 LiuGong 870HE pure electric wheel loaders across its quarry fleet, expanding one of the highest-tonnage battery-electric loader deployments in the sector. The 870HE units, among the largest pure electric loaders currently available, are targeted at high-duty quarry loading cycles traditionally dominated by diesel machines. For geotechnical and quarry operators, this signals accelerating adoption of heavy battery-electric equipment for primary load-and-haul, with implications for power supply design, charging infrastructure layout and ventilation requirements in future pit and plant planning.

    Gold price nears month high: planning implications for mine project teams
    Mining
    about 15 hours ago

    Gold price nears month high: planning implications for mine project teams

    Gold jumped 1.7% to about $4,887/oz, its highest level since 17 March, after Iran reopened the Strait of Hormuz, restoring commercial traffic through a corridor that carries roughly 20% of global oil flows. Silver climbed more than 5% to $83/oz, a five-week high, as easing energy-price and inflation fears revived expectations of interest rate cuts that favour non-yielding assets. Analysts at Zaner Metals and MKS PAMP see scope for a move back towards $5,000/oz in the near term, while Goldman Sachs keeps a bullish $5,400/oz year-end target.

    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.