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Youanmi first gold on track: development advance and stope flexibility for planners

September 8, 2026|

Reviewed by Tom Sullivan

Youanmi first gold on track: development advance and stope flexibility for planners

First reported on Australian Mining

30 Second Briefing

Rox Resources’ Youanmi gold project in Western Australia remains on track for first gold in mid-2027, with August underground advance beating the definitive feasibility study schedule. The mine recorded 577m of total mining for the month, including 431m of development across three separate mining areas and 146m of stripping as construction activity ramps up. Faster-than-planned lateral development gives additional flexibility for stope sequencing, de-risking early production and ventilation planning for the restart of this historic underground operation.

Technical Brief

  • Underground advance is being benchmarked directly against the definitive feasibility study (DFS) development schedule.
  • Three distinct underground mining areas are already active, enabling early multi-centre access and services installation.
  • Stripping activities in August indicate surface and near-surface infrastructure pads and access are now being established.
  • Construction “gathering pace” implies concurrent work fronts: underground, surface civils and processing-related enabling works.
  • Restarting a historic underground mine typically requires extensive rehabilitation of old headings, ground support and services.
  • Early overperformance against DFS development often allows earlier establishment of secondary egress and ventilation circuits.
  • Multi-area development at this stage reduces geotechnical and grade risk concentration in any single ore zone.

Our Take

The August development advance across three mining areas at the Youanmi gold mine comes on the back of final Works Approval for the processing plant and TSF (13 July 2026 item), signalling that Rox Resources is now aligning underground access with imminent surface plant construction rather than purely exploration-driven development.

Installation of Glencore Technology’s Albion Process circuit at Youanmi (7 August 2026 item) means the current 577 m of monthly mining advance is likely being planned with a blend of free-milling and refractory ore in mind, which can materially improve payable recovery from complex Western Australian gold mineralisation compared with conventional CIL-only flowsheets.

High-grade underground intercepts reported in August 2026 at Youanmi (e.g. 2.24 m at 39.33 g/t gold) suggest that sustaining or increasing the current development rate into mid-2027 could quickly translate into early high-margin stopes, giving Rox Resources more flexibility on ramp-up sequencing and cash flow timing than a typical single-lode start-up.

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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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