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    Critical Metals’ $30M Tanbreez rare earths push: schedule and design notes for mine planners

    March 11, 2026|

    Reviewed by Tom Sullivan

    Critical Metals’ $30M Tanbreez rare earths push: schedule and design notes for mine planners

    First reported on MINING.com

    30 Second Briefing

    Critical Metals has approved a $30 million programme to accelerate drilling, infrastructure, engineering design and metallurgical work at its Tanbreez heavy rare earth project in Greenland, one of the world’s largest known rare earth deposits. Development is being supported by a multi-use storage and pilot facility in Qaqortoq and a fully integrated mobile assay laboratory providing real-time geochemical data for drill core and processing samples. First ore is targeted for Q4 2028–Q1 2029, with concentrate exports by Q3 2029 and offtake agreements already covering about 75% of expected concentrate output.

    Technical Brief

    • $30 million allocation explicitly targets drilling, site infrastructure, engineering design and metallurgical testwork advancement.
    • A multi-use storage and pilot facility in Qaqortoq has been sanctioned to support early-stage processing.
    • A fully integrated mobile assay laboratory has been acquired to deliver real-time geochemical data on site.
    • Mobile lab capability is intended to shorten turnaround for elemental analysis of drill core and process samples.
    • Lab support is configured around a proof-of-concept pilot plant, de-risking future flowsheet and recovery design.
    • Board approval follows roughly 18 months of exploration, partnership building and infrastructure planning at Tanbreez.
    • Offtake agreements already cover about 75% of projected rare earth concentrate output from the project.
    • Western government interest, including prior US approaches on a potential stake, underpins strategic supply-chain positioning.

    Our Take

    The 18‑month window flagged for exploration progress and infrastructure planning aligns with Critical Metals’ 2025 drilling update at Tanbreez, suggesting this $30m programme is timed to convert the 1,750‑metre mineralised corridor into a more bankable resource base ahead of the 2028–2029 offtake horizon.

    Tanbreez’s focus on heavy rare earths in Greenland stands out in our database, where most of the 99 rare earth keyword‑matched pieces centre on light rare earth or mixed REE plays, implying this project could command strategic attention from US buyers seeking diversification from China-heavy supply chains.

    The inclusion of a fully integrated mobile assay laboratory and proof‑of‑concept pilot plant at the Tanbreez Hill deposit area indicates Critical Metals is prioritising rapid metallurgical feedback, which is often a bottleneck in HREE projects where complex mineralogy can delay process route selection and offtake negotiations.

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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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