Macmahon’s two-year Daisy Milano extension: planning notes for mine engineers
Reviewed by Joe Ashwell
First reported on International Mining – News
30 Second Briefing
Macmahon Underground Pty Ltd has secured a two-year extension from Vault Minerals to continue providing underground mining services at the Daisy Milano gold mine in Western Australia’s Kalgoorlie region. The scope covers ongoing mine development and production activities, maintaining contractor continuity at a site where Macmahon has been operating since 2024. For geotechnical and production teams, the extension signals stable planning horizons for development drilling, ground support regimes and scheduling of stoping sequences over the next two years.
Technical Brief
- Continuity of operator allows existing ground support patterns and drilling layouts to be maintained with minimal re‑design.
- Existing underground fleet, workshops and services can remain in situ, reducing capital tied up in re‑establishment.
- Geotechnical monitoring regimes and instrumentation schedules can be extended without interruption to data series or access.
Our Take
Macmahon Underground’s work at the Daisy Milano Gold Mine in Western Australia sits alongside its new underground contract at the Mt Marion lithium operation near Kalgoorlie, signalling a deliberate build-up of underground capability across both gold and battery metals in the same regional labour market.
In our database of 1267 Mining stories, Macmahon Holdings Limited appears repeatedly in underground ‘Contract Award’ items, suggesting it is consolidating a position as a go‑to contractor for mid-tier Australian underground gold projects such as Daisy Milano and the Central Tanami Groundrush decline.
For Vault Minerals, locking in a two‑year term with an established underground contractor in the Kalgoorlie region likely helps de‑risk continuity of operations and workforce retention at Daisy Milano, at a time when competing projects like Mt Marion are drawing on similar skilled underground crews.
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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