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Australia
Warkworth Mine (Mount Thorley Warkworth Operation)

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 Location:
10 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)
Yancoal Australia, Ltd. 84.47 % 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 Limited and CNA Resources Limited, Nippon Steel Australia Pty Limited (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 Warkworth, mining activities will continue to advance in a westerly direction in both North and West Pits. South Pit has reached its final limit with regards to excavation. This area is currently being utilised for dumping activity.


Crushing and Grinding


Processing

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

Source: 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.

Warkworth CHPP has a nominal output capacity of 7.2 million washed saleable tonnes per annum and a bypass capacity of approx 3 million tonnes of ROM. Coal is transferred from the active working areas of the mine to the CHPP by truck. The raw coal is screened into two sizes and then washed via the use of dense medium cyclones, spirals and flotation circuits, as follows:

-Co ........


Production:

CommodityUnits2020201920182017201620152014
Coal (M/T) kt  ......  Subscription required ^ *  ......  Subscription required  *12,121  *
Coal (semi-soft coking) kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Coal (thermal) kt  ......  Subscription required  ......  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:

Metrics20192018201720162015
Coal tonnes mined  ......  Subscription required14.6 Mt13.6 Mt14.1 Mt13.7 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage Commodity
Proven 180 Mt Coal (M/T)
Probable 135 Mt Coal (M/T)
Proven & Probable 315 Mt Coal (M/T)
Measured 460 Mt Coal (M/T)
Indicated 550 Mt Coal (M/T)
Inferred 460 Mt Coal (M/T)
Total Resource 1,470 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
Annual Report 2018
Annual Review 2018
Other 2018
Annual Report 2017
Annual Review 2017
Annual Report 2016
Annual Review 2016
Annual Report 2015
Annual Review 2015
Annual Report 2014
Other 2014
Other 2013
Annual Report 2012
Other 2011
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Aerial view:

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