Komatsu at Gunlake Quarries: HD605 fleet expansion insights for quarry engineers
Reviewed by Joe Ashwell

First reported on Roads & Infrastructure (AU)
30 Second Briefing
Gunlake Quarries has expanded its New South Wales fleet with seven Komatsu HD605 rigid dump trucks to service higher production across its hard rock operations. The HD605 units, typically configured for around 60-tonne payloads with high-impact body liners and retarder braking suited to steep quarry haul roads, are being integrated into existing load-and-haul circuits alongside Gunlake’s concrete batching supply chain. For quarry and civil contractors, the move signals continued investment in high-capacity off-highway haulage to support aggregate supply into regional road and infrastructure projects.
Technical Brief
- Gunlake’s fleet expansion supports vertically integrated operations spanning both Gunlake Quarries and Gunlake Concrete.
- The O’Neil family’s five generations of quarrying and concrete experience underpin current operational decision-making.
Our Take
Komatsu’s supply of seven HD605 rigid trucks to Gunlake Quarries in New South Wales contrasts with its 1,000th autonomous ultra-class truck milestone in our coverage, underscoring how the company is simultaneously targeting small to mid-scale quarry fleets and mega-mine AHS deployments.
With Gunlake Group’s family-run operation in Australia and Canada Nickel’s Crawford project both choosing Komatsu fleets, our database suggests the OEM is strengthening its position with greenfield and independent operators rather than relying solely on the largest diversified miners.
Recent items on Komatsu’s data-driven maintenance and new parts distribution centres indicate that even for a modest truck count like Gunlake’s, lifecycle support and uptime guarantees are likely to be a key part of the value proposition rather than just the iron itself.
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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