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Australia
Mount Thorley Mine (Mount Thorley Warkworth Operation)

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 Location:
13 km SW from Singleton, New South Wales, Australia

  Regional Office:
Level 18 Darling Park Tower 2 201 Sussex Street
Sydney
New South Wales, Australia
2000
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (semi-soft coking)
  • Coal (thermal)
  • Coal (M/T)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
Processing
  • Wash plant
  • Spiral concentrator / separator
  • Flotation
  • Dense media separation


Owners & OPERATOR

Source:
CompanyInterestOwnership
Coal & Allied (NSW) Pty Ltd (operator)
POSCO Australia Pty Ltd. 20 % Indirect
Yancoal Australia, Ltd. 80 % Indirect
Yancoal manages Mount Thorley Warkworth on behalf of the joint venture partners:
- Mount Thorley: Yancoal Australia Ltd (80 per cent) and POSCO Australia Pty Ltd (20 per cent).
- Warkworth: Yancoal Australia Ltd (84.5 per cent) through CNA Warkworth Australasia Pty Ltd (55.722 per cent) and CNA Resources Ltd (28.75 per cent), Nippon Steel Australia Pty Ltd (9.53 per cent) and Mitsubishi Materials (Australia) Pty Limited (6 per cent).

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

  • Truck & Shovel / Loader
  • Dragline


Summary:

Within Mount Thorley, two small areas in the northern and southwestern extents of the mining lease will reach their final limits during 2020 with remaining reserves to be mined to depth during 2020.


Crushing and Grinding


Processing

  • Wash plant
  • Spiral concentrator / separator
  • Flotation
  • Dense media separation

Flow Sheet: Subscription required

Summary:

Mineral Processing.
All processing and rejects/tailings disposal activities undertaken in 2019 were consistent with the approved MOP and no changes were made to the processing and rejects/tailings disposal methods.

Currently active tailing emplacements include the Centre Ramp Tailings Storage Facility and Abbey Green South Tailings Storage Facility. Tailings Dam 2 was previously used to receive ash from Redbank Power Station but ceased in July 2014 following the cessation of operations at Redbank Power Station. During 2019 capping works on Tailings Dam 2 continued.


Production:

CommodityUnits202020192018201720162015
Coal (M/T) kt  ......  Subscription required ^ *  ......  Subscription required  *  ......  Subscription required  *
Coal (semi-soft coking) kt  ......  Subscription required  ......  Subscription required  ......  Subscription required
Coal (thermal) kt  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as clean coal. ^ Guidance / Forecast.
* Combined production for Mount Thorley Mine and Warkworth Mine
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required3.96 Mt3.32 Mt
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityMarketable Coal
Proven 7 Mt Coal (M/T) 5 Mt
Probable 37 Mt Coal (M/T) 25 Mt
Proven & Probable 44 Mt Coal (M/T) 30 Mt
Measured 300 Mt Coal (M/T)
Indicated 160 Mt Coal (M/T)
Inferred 180 Mt Coal (M/T)
Total Resource 640 Mt Coal (M/T)


Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jul 17, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required May 6, 2020
....................... Subscription required ....................... Subscription required Subscription required Jul 17, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Annual Review 2017
Annual Report 2016
Annual Review 2016
Annual Report 2015
Annual Review 2015
Annual Report 2014
Annual Review 2014
Other 2014
Annual Review 2013
Other 2013
Annual Report 2012
Other 2011
Subscription required - Subscription is required.

Aerial view:

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