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    Onslow Iron record lifts MinRes: production and fleet utilisation insights for engineers

    July 29, 2026|

    Reviewed by Joe Ashwell

    Onslow Iron record lifts MinRes: production and fleet utilisation insights for engineers

    First reported on Australian Mining

    30 Second Briefing

    Mineral Resources reported record FY26 output, with Mining Services delivering 341Mt, up 22 per cent year-on-year, driven by ramp-up at the Onslow Iron operation in Western Australia. Onslow Iron produced 8.8 million wet metric tonnes in FY26, with volumes expected to increase as additional pit development, crushing capacity and transhipping infrastructure come online. The stronger iron ore performance, combined with record lithium production, signals sustained high utilisation of MinRes’ contract mining fleet and continued demand for bulk haulage, processing and port services across its Pilbara and Goldfields assets.

    Technical Brief

    • Elevated production levels will drive more intensive maintenance planning for mobile plant, fixed crushing circuits and rail/haul roads.
    • For similar multi-commodity hubs, synchronising ramp-up of pits, processing and port capacity remains a key schedule risk.

    Our Take

    Mineral Resources’ strong FY26 mining services production guidance alongside 8.8 Mt from Onslow Iron comes as the company is simultaneously committing A$490 million to expand the Mt Marion lithium operation, signalling a deliberate balance between bulk iron ore cashflow and higher-margin lithium growth in Western Australia.

    In our database, Mineral Resources is one of the few Australian operators currently scaling both iron ore and lithium in parallel, which likely gives it more flexibility than single-commodity peers when iron ore prices soften or lithium prices remain volatile.

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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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