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    Core Lithium BP33 hit beyond resource: design and scheduling notes for mine teams

    August 11, 2026|

    Reviewed by Tom Sullivan

    Core Lithium BP33 hit beyond resource: design and scheduling notes for mine teams

    First reported on Australian Mining

    30 Second Briefing

    Core Lithium has intersected a broad zone of high-grade spodumene beyond the current BP33 resource at its Finniss lithium operation in the Northern Territory, with the first diamond hole NMRD100 returning 34.08m at 2.09 per cent Li₂O from depth. The intercept lies outside the existing resource envelope, signalling potential for both down-dip and along-strike extensions to the BP33 orebody. For mine planners and geotechs, this could justify revised pit or underground designs and updated geotechnical domains as drilling tightens structural and grade continuity.

    Technical Brief

    • NMRD100 is the first diamond hole of Core Lithium’s latest BP33 exploration campaign.
    • Intersection occurs outside the current BP33 resource footprint, indicating mineralisation beyond existing geological wireframes.
    • Spodumene-bearing zone is described as “broad”, implying potential for thicker mining panels than modelled.

    Our Take

    The 34.08m at 2.09% Li2O intercept at BP33 is materially higher grade than many operating hard‑rock lithium mines in our database, which typically model reserve grades closer to 1–1.4% Li2O, suggesting upside for mine life or cut-off grade optimisation at Finniss.

    Earlier coverage of Core Lithium’s second offtake with Glencore for Finniss fines indicates the company is already monetising lower-grade or stockpiled material, so additional high-grade underground tonnes at BP33 could allow a more selective blending strategy and improve realised concentrate quality.

    With Finniss already transitioning from the Grants open pit to underground at BP33 and simultaneously drilling the Blackbeard prospect, high-grade hits beyond the current resource envelope strengthen the case for a multi-source feed strategy to the Northern Territory plant rather than reliance on a single pit or lode.

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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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