Thiess excavator world record at Mount Pleasant: productivity benchmarks for mine planners
Reviewed by Tom Sullivan

First reported on Australian Mining
30 Second Briefing
A single Liebherr R 9600 excavator at MACH Energy’s Mount Pleasant Operation in the New South Wales Hunter Valley has shifted 17 million bank cubic metres in 12 months, setting a new world record for the model. The 600‑tonne machine logged 6,840 operating hours over the year, implying sustained high availability and consistent dig rates under production conditions. The performance gives mine planners and maintenance teams a concrete benchmark for fleet sizing, duty cycles and component life on ultra‑class excavators in similar coal overburden environments.
Technical Brief
- Machine operated at MACH Energy’s Mount Pleasant Operation near Muswellbrook in the NSW Hunter Valley.
Our Take
The same Mount Pleasant record has been picked up in our database via International Mining’s July 2026 coverage, signalling that Thiess and Liebherr are actively using this Hunter Valley coal benchmark as a global reference case for the R 9600 fleet.
With coal as a tagged keyword in 91 pieces, the Hunter Valley record at a New South Wales coal mine stands out against a backdrop where many coal stories focus on approvals and market outlook, giving operators in the region a concrete productivity data point when benchmarking truck–shovel fleets and contract terms.
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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