Meeka’s underground momentum at Murchison: design and cost lens for mine engineers
Reviewed by Tom Sullivan

First reported on Australian Mining
30 Second Briefing
Meeka Metals is accelerating development at its Murchison gold project in Western Australia, shifting focus from open pit to higher-grade underground ore at the Turnberry and St Anne’s deposits. The company is advancing mine design and scheduling for underground stoping, targeting narrower, higher-grade lodes that support lower unit costs and longer mine life compared with the current open-pit plan. For geotechnical and mining teams, the move signals upcoming demand for detailed underground geotechnical models, ground support design, and ventilation and dewatering studies in Archaean greenstone host rocks.
Technical Brief
- Meeka is reallocating study effort from pit optimisation to detailed underground mine design and scheduling.
- Underground evaluation is being integrated into the existing Murchison feasibility work program rather than run separately.
- The company is updating its financial model to compare underground-first sequencing against the current open-pit schedule.
- Meeka indicates that the revised underground plan could materially alter project capex phasing and payback timing.
- For similar Archaean greenstone projects, the case supports early underground trade-off studies against marginal pit cut-backs.
Our Take
The strong presence of Australian Mining across related items – from METS export pushes (Austmine) to battery-electric fleets (XCMG) – suggests that underground development at a WA gold project such as Murchison will be occurring in a market where contractors are under pressure to offer more automation- and electrification-ready fleets, even if not yet mandated.
With 2210 tag-matched ‘Projects’ and ‘Contract Award’ pieces and 379 gold keyword matches, our coverage shows that junior and mid-tier gold operators in Australia increasingly use early underground contract awards as a de-risking signal to financiers, rather than waiting for full construction FID to lock in mining services capacity.
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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