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
    Projects
    Contract Award

    Core Lithium’s Finniss restart: underground BP33 contract insights for planners

    May 14, 2026|

    Reviewed by Joe Ashwell

    Core Lithium’s Finniss restart: underground BP33 contract insights for planners

    First reported on Australian Mining

    30 Second Briefing

    Core Lithium has awarded a $274 million underground mining contract at the Finniss lithium project near Darwin to Dev Mining Services, a subsidiary of Development Global, as part of its restart strategy after open-pit operations were suspended in 2024. The deal covers underground development and production at the BP33 deposit, targeting spodumene ore beneath the existing pit using decline access rather than further cutbacks. For geotechnical and mine planners, the shift to underground at BP33 signals a focus on higher-grade zones and tighter control of strip ratios and operating costs in a volatile lithium price environment.

    Technical Brief

    • Contract value of $274 million implies multi-year underground development and production scope at BP33.

    Our Take

    Taken with the circa A$50 million surface mining contract at the Grants deposit (7 April 2026), the Dev Mining Services award signals that Core Lithium is locking in both open-pit and underground capacity at Finniss ahead of a full operational ramp-up rather than a staged restart.

    The sequence of pieces in our database – ore reserve upgrade (26 January 2026), Glencore offtake and funding (3 March 2026), FID to restart (19 March 2026), then contracting awards – suggests Finniss is now in an execution phase where schedule risk will hinge more on contractor performance than on financing or approvals.

    Within the lithium coverage in Australia, Core Lithium now appears among the more contract-miner-heavy operators, which typically allows faster scaling or curtailment in response to price swings but can leave margins more exposed to contractor cost escalation over the three-year-plus terms being signed.

    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

    Litus–UWin Nanotech critical minerals JV: flowsheet design notes for engineers
    Mining
    2 days ago

    Litus–UWin Nanotech critical minerals JV: flowsheet design notes for engineers

    Calgary-based Litus has signed a 25 May memorandum of understanding with Taiwan’s UWin Nanotech to jointly develop selective extraction, separation, recovery and purification flowsheets for cobalt, lithium, nickel and other elements from battery recycling and other secondary sources. The collaboration will combine Litus’ LiNC one-step direct lithium extraction platform for low- and high-concentration brines and its ReLiGN battery recycling process with UWin’s hydrometallurgical systems used in Apple-certified e‑waste and Li-ion recycling. Engineers should watch for integrated nanomaterial–hydromet circuits targeting both critical minerals and rare earth elements in circular supply chains.

    Gold price erases 2026 gains: cost-of-carry and project impacts for miners
    Mining
    2 days ago

    Gold price erases 2026 gains: cost-of-carry and project impacts for miners

    Gold fell as much as 3.5% to $4,315/oz, its lowest since March, erasing 2026 gains after a strong US May nonfarm payrolls print pushed Treasury yields and the dollar higher and lifted Fed rate hike odds. US gold futures dropped over 3.2% to $4,342/oz, with CME FedWatch now pricing about a 68% chance of a December hike versus roughly 50% pre-data. Since the Iran war began and the Strait of Hormuz closure drove energy prices up, bullion has slid nearly 18%, raising the cost of carry for non-yielding gold.

    Mining
    2 days ago

    Codelco’s El Teniente Copper & Moly Marks: ESG design notes for mine engineers

    Codelco’s El Teniente Division has secured both The Copper Mark and The Molybdenum Mark after a rigorous independent on-site assessment of its responsible production practices. The international assurance process verified that El Teniente’s policies and operational controls meet high environmental, social and governance criteria, including responsible mineral value chain management. For engineers and project teams, the dual certification signals that future brownfield expansions, tailings management and underground operations at this major Chilean copper–molybdenum complex will be scrutinised against these ESG benchmarks.

    Related Industries & Products

    Mining

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

    Tunnelling

    Specialised solutions for tunnelling projects including grout mix design, hydrogeological analysis, and quality control.

    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