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    Core Lithium’s Finniss restart: 2026 ramp-up planning notes for mine engineers

    May 21, 2026|

    Reviewed by Joe Ashwell

    Core Lithium’s Finniss restart: 2026 ramp-up planning notes for mine engineers

    First reported on Australian Mining

    30 Second Briefing

    Core Lithium has begun blasting and excavation at the Grants open pit within its Finniss lithium project, signalling the restart of mining in the Northern Territory operation. Finniss is targeting a return to spodumene concentrate production in the December quarter of 2026, after being placed on care and maintenance amid weak lithium prices. The schedule gives contractors and suppliers a roughly two‑year window to plan drill-and-blast, load-and-haul, and dewatering capacity for the pit’s ramp-up phase.

    Technical Brief

    • Initial works centre on drill-and-blast and mechanical excavation in the Grants open pit.

    Our Take

    The December-quarter 2026 target to re-enter the spodumene market aligns with Core Lithium’s recent A$290 million funding package noted in our coverage, signalling that Finniss is being positioned to catch the next contract-renewal window for major offtakers like Glencore, Mineral Resources and SQM rather than the spot market.

    With both NRW Pty Ltd handling surface works at Grants and Dev Mining Services contracted for underground at BP33, Finniss is emerging in our database as one of the more heavily contractor-leveraged lithium operations in Australia, which typically allows rapid ramp-up but can leave margins more exposed to contractor cost escalation.

    Among lithium pieces in our mining corpus, relatively few are located in the Northern Territory, so Finniss stands out as a test case for how NT approvals, logistics via Darwin, and workforce availability will affect the competitiveness of hard-rock spodumene projects against more established Western Australian hubs.

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    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.

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