Rox high-grade gold at Youanmi: mine-life and design takeaways for planners
Reviewed by Tom Sullivan

First reported on Australian Mining
30 Second Briefing
Rox Resources has intersected 4.87m at 15.13g/t gold from 584.13m at the United North lode beneath the current Youanmi mineral resource in Western Australia, pointing to high-grade extensions at depth. The result comes from a resource conversion and growth drilling programme targeting down-plunge continuity, with mineralisation occurring well below existing modelled envelopes. For mine planners and geotechs, the intercept supports potential underground mine-life extensions and justifies further deep drilling, geotechnical characterisation and updated resource modelling.
Technical Brief
- United North lode drilling is part of a defined “resource conversion and growth” programme at Youanmi.
- New intercept sits beneath the currently modelled mineral resource shell, implying untested down-plunge volume.
- Depth of mineralisation indicates future access via underground methods rather than extending existing open pits.
- Step-out hole geometry is targeting down-plunge continuity, important for stope design and ventilation layouts.
- High-grade shoot continuity at this depth will influence geotechnical domain definition and rock mass characterisation priorities.
Our Take
High-grade gold at around 584m depth at Youanmi is strategically useful for Rox Resources because related coverage shows the project already funded and plant construction underway, so deeper ounces can be slotted into mine plans without waiting for new infrastructure decisions.
The 15.13g/t intersection beneath the existing Youanmi resource envelope suggests scope to extend underground mine life or support higher-grade stopes, which aligns with recent reports in our database that development at United North is already advancing beyond the original DFS mine design.
Among gold project pieces in Western Australia in our coverage, Youanmi stands out as one of the few where both a one‑million‑tonne‑per‑annum plant build and sizeable project debt facilities are already in place, meaning new deep intercepts like this can more quickly translate into reserve and schedule upgrades than at earlier‑stage peers.
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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