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    Tropicana reserve boost: mine planning and geotechnical implications for JV teams

    February 23, 2026|

    Reviewed by Joe Ashwell

    Tropicana reserve boost: mine planning and geotechnical implications for JV teams

    First reported on Australian Mining

    30 Second Briefing

    Regis Resources has reported a fresh mineral resource upgrade at the Tropicana gold joint venture in Western Australia, signalling continued growth potential at the large-scale open-pit and underground operation it shares with AngloGold Ashanti. The updated mineral resource statement covers multiple ore sources across the Tropicana, Havana and Boston Shaker deposits, with ongoing drilling targeting extensions along the 200km strike length of the Tropicana Belt. For mine planners and geotechs, the expanded inventory supports longer pit phases, deeper underground development and potential revisions to cut-off grades and waste-stripping schedules.

    Technical Brief

    • Resource upgrade gives mine planners scope to redesign pushbacks and underground levels on a longer planning horizon.
    • Longer life inventory enables potential smoothing of waste-stripping peaks and more stable mining fleet deployment.
    • For similar multi-deposit belts, staged resource upgrades are increasingly used to defer premature closure studies.

    Our Take

    Regis Resources features in only a small subset of the 1090 Mining stories in our database, so a reserve uplift at the Tropicana joint venture signals a relatively meaningful step-change for its Australian growth pipeline compared with more frequently covered mid-tier peers.

    Within the 2011 Projects- and Contract Award-tagged pieces, most Australian items focus on new developments rather than brownfields reserve additions, suggesting Tropicana’s reserve boost could extend mine life and defer the need for Regis to commit capital to riskier greenfield options.

    For contractors tracking Australian Mining project work, incremental reserve growth at a large joint venture like Tropicana often precedes additional cutback, haulage, or processing contracts, which can be material even without headline-grabbing greenfield awards.

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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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