Summary

Mine Type	Open Pit
Status	Active
Commodities	Coal (semi-soft coking) Coal (thermal)
Mining Method	Truck & Shovel / Loader Dragline
Production Start	...
Snapshot	Mount Thorley mine is a part of integrated operation Mount Thorley Warkworth (MTW). Coal is washed in both the North CPP and South CPP in accordance with market requirements.

Deposit type

• Sedimentary

Summary:

Mount Thorley Warkworth (MTW) is located within the Sydney Basin of New South Wales (NSW), a world–class export thermal coal mining district.

The Sydney Basin is a north-south trending basin, containing generally flat lying Permian Triassic sequences, approximately 250 km long, averages 100 km in width, ranges from 2km to 4km in depth and covers an area of approximately 37,000 km2 onshore and 15,000 km2 offshore.

Sedimentation in the Sydney Basin can be divided into many distinct depositional episodes, related to marine transgression and regression an terrestrial sedimentation. In the Sydney Basin the total thickness of the sedimentary package ranges on average from 2 to 3 km over much of the basin, based primarily on drill-hole records and deep seismic profiles.

Coal bearing formations in Permian aged sediments are extensive in the Sydney Basin and range in depth from near the surface to over 1 km. The Sydney Basin is divided into five major coalfields; Southern, Central, Newcastle, Hunter and Western, and comprised of black anthracite coal bed of a few centimetres to several meters, interbedded with sandstones, shales, tuffs and claystone. During coal bore drilling in the late 19th Century a number of bores encountered flows of natural gas.

The Late Permian coal measures show sources of both oil and gas, with the offshore basin possibility more prone to oil Fine grained sediments deposited during the brief marine incursions that took place during the Late Permian may also have some potential as oil sources.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Commodity Production

Operational metrics

Metrics	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
Coal tonnes mined	....	....	....	....	....	....	0.71 Mt	3.02 Mt	4.08 Mt	3.96 Mt	3.32 Mt

Personnel

Job Title	Name	Profile	Ref. Date
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