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    Liontown’s Kathleen Valley underground ramp-up: production and cost lens for engineers

    March 11, 2026|

    Reviewed by Joe Ashwell

    Liontown’s Kathleen Valley underground ramp-up: production and cost lens for engineers

    First reported on Australian Mining

    30 Second Briefing

    Liontown Resources has doubled revenue in the December half-year as the Kathleen Valley lithium project transitions to fully underground mining, with the first stopes now in steady production. The Western Australian operation is ramping up spodumene concentrate output from its initial nameplate capacity while bedding in underground haulage and ventilation systems designed for high-grade ore zones at depth. Management is guiding to a stronger second half as underground tonnages displace remaining open-pit feed, with unit costs expected to fall as development metres convert to ore.

    Technical Brief

    • For other Western Australian hard‑rock lithium mines, the case strengthens for earlier underground transition in mine planning.

    Our Take

    Within our 1097 Mining stories, Australia-based hard‑rock lithium projects like Liontown Resources’ Kathleen Valley mine are increasingly being tracked for their ability to transition from open pit to underground, as this often determines long‑term cost position and mine life extension potential.

    For Projects‑tagged coverage in Australia, early underground ramp‑up performance at assets such as Kathleen Valley is closely watched by contractors and lenders, because it tends to drive renegotiation of mining services terms and influences financing conditions for similar greenfield underground builds.

    Liontown Resources now sits alongside a small cluster of Australian developers in our database whose flagship underground operations have rapidly scaled revenue soon after first ore, signalling that execution capability at the initial project can materially affect how capital markets treat their broader growth pipeline.

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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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