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    Antipa Minyari resource upgrade: design and pit optimisation notes for planners

    April 7, 2026|

    Reviewed by Tom Sullivan

    Antipa Minyari resource upgrade: design and pit optimisation notes for planners

    First reported on Australian Mining

    30 Second Briefing

    Antipa Minerals has upgraded the mineral resource for its 100 per cent-owned Minyari gold–copper–silver project in Western Australia’s Paterson Province, signalling stronger standalone development potential. The update covers the Minyari and WACA deposits, where previous drilling defined near-surface, high-grade mineralisation amenable to open-pit and potential underground mining, with gold, copper and silver reported over multiple lodes. For geotechnical and mine planners, the revised resource inventory and geometry will directly influence pit shell optimisation, underground access design and potential processing plant scale on a remote greenfields site.

    Technical Brief

    • For comparable greenfields mining projects, such resource upgrades typically trigger revised geotechnical domaining and slope design envelopes.

    Our Take

    Our database shows a steady sequence of Minyari updates through late 2025 and early 2026 (resource upgrade, pre‑feasibility work, then the Fiama lode discovery), signalling that Antipa Minerals is progressively de‑risking the project rather than relying on a single step-change announcement.

    With Minyari positioned as a gold–copper–silver system in Western Australia’s Paterson Province, it sits among a relatively small subset of our gold-tagged coverage that also emphasises copper, which can materially improve project economics under current multi-commodity pricing scenarios.

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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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