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Australia
Metropolitan Mine

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 Location:
0.1 km E from Helensburgh, New South Wales, Australia

  Address:
Parkes Street
PO Box 402
Helensburgh
New South Wales, Australia
2508
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Coal (M/T)
Mining Method
  • Longwall
Processing
  • Wash plant
  • Crush & Screen plant
  • CHPP
  • Spiral concentrator / separator
  • Flotation
  • Dense media separation


Owners

Source: p. 10
CompanyInterestOwnership
Peabody Energy, Inc. 100 % Indirect
Helensburgh Coal Pty Ltd. (operator) 100 % Direct
The Metropolitan Coal Mine (Metropolitan Coal) is owned and operated by Helensburgh Coal Pty Ltd which is a wholly owned subsidiary of Peabody Energy Australia Pty Ltd (Peabody).

Deposit Type

  • Sedimentary


Summary:

Metropolitan Coal is located within the Southern Coalfield, within the southern part of the Sydney Basin, which is infilled with sedimentary rocks of Permian age (<270 million years ago) and of Triassic age (<225 million years ago).

Three formally named coal seams of the Illawarra Coal Measures are present in the Southern Coalfield, namely the Bulli, Balgownie and Wongawilli Seams.

Immediately overlying the Bulli Coal unit of the Illawarra Coal Measures are sandstones and claystones of the Narrabeen Group. The Narrabeen Group contains the Newport Formation (sometimes referred to as the Gosford Formation), the Bald Hill Claystone (also referred to as Chocolate Shale and formed as a result of laterite weathering Gerringong Volcanics), the Bulgo Sandstone, the Stanwell Park Claystone/Shale, the Scarborough Sandstone, the Wombarra Shale and the Coal Cliff Sandstone. At the top of the sequence in the area of interest is the Hawkesbury Sandstone (HCPL, 2008).

Many features of the NSW Coalfields surface topography are directly correlated to the basement structure, the depth of the basement from the surface through many sedimentary epochs and the deformational episodes of the basement rock. The Palaeozoic granite basement rock underlies the Sydney Basin sedimentary rocks. At Metropolitan Coal the total depth of Sydney Basin sedimentation is 2.3 km.

Surface lineaments are linear features in the surface landscape, preferentially eroded, that may be the surface expression of an underlying geological structure, fault or dyke or simply a result of surface joint sets. Lineaments are identified from aerial photography, LiDAR and from digital topographic sets. Lineaments mapped by Metropolitan Coal are shown on Figure 5. Additional LiDAR mapping was conducted by Metropolitan Coal in July/August 2019 to identify any new linear features within the Longwalls 305-307 35° angle of draw and/or predicted 20 mm subsidence contour. The 2019 LiDAR review confirmed the existing lineament mapping analysis.

A strike slip fault, F0008, with up to 1.2 m vertical displacement occurs over Longwalls 20-27, and this fault extends partially through Longwall 304. This fault is associated with a surface linear that aligns with the Eastern Tributary and then passes east of the Woronora Reservoir full supply level dissipating into the landscape. Longwall 20 through 27 were extracted through this feature directly under the Eastern Tributary with no moisture evident at seam level and no change in mine water balance during the seven years of extraction in the area. At the time of writing, Longwall 304 extraction had not intercepted F0008 projected extents.


Mining Methods

  • Longwall


Summary:

Coal extracted from the underground mining operations is transferred by conveyor to the surface facilities area. Longwalls 305-307 extraction will occur from north to south. Longwalls 305-307 will be extracted using retreating longwall mining methods for secondary extraction of a panel with a 138 m void width. The longwall panel will be formed by driving two sets of gate roads (the tailgate and maingate roads). Each gate road requires two roadways (headings) to be driven parallel to each other. The two roadways will be used for ventilation purposes, with one of the roadways utilised as a transport road and the other roadway used to convey the coal that will be mined back to the main conveyors. Construction of development main headings and gate roads are mined using continuous miners. The dimensions of the headings will be approximately 5.2 m wide and 3.2 m in height. The headings are connected approximately every 120 m by driving a cut-through from one heading to another which forms pillars of coal along the length of the gate road. The tailgate and maingate roads are separated by the 133 m wide longwall panel (measured between roadway centrelines). The maingate roads and tailgate roads are then linked together by driving an installation road and bleeder road at the top end of the longwall panels. Run-of-mine (ROM) coal will be conveyed by the maingate conveyor to the main conveyor which will carry coal to the surface of the mine. The extraction of Longwall 305 commenced on 12 April 2020 and was completed on 21 November 2020. After a planned mine shutdown from 1 January 2021 to 2 May 2021 in response to subdued coal market conditions, Longwall 306 commenced extraction on 15 June 2021. It is expected that the extraction of Longwall 306 will be completed in March 2022.


Crushing and Grinding


Processing

  • Wash plant
  • Crush & Screen plant
  • CHPP
  • Spiral concentrator / separator
  • Flotation
  • Dense media separation

Source: Subscription required

Summary:

Coal extracted from the underground mining operations is transferred by conveyor to the surface facilities area. ROM coal is crushed, screened and washed at the CHPP. The majority of product coal is transported by train to the Port Kembla Coal Terminal (PKCT) (in Wollongong) for domestic and overseas customers. CHPP coal reject material is transported by rail and truck to the PKCT, emplaced in unused workings, or transported to offsite locations for beneficial reuse.

The CHPP is located in the major surface facilities area and comprises crushers, screens, dense medium cyclones, spirals, flotation cells, separators, filters and thickeners to process the coal and separate coal reject materials.


Production:
The Metropolitan mine was idled in the fourth quarter of 2020. The mine restarted production in the second quarter of 2021.

CommodityUnits2022202120202019201820172016
Coal (M/T) Mt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required1.50.91.7
Heat ContentBTU/lb12,60012,60012,60012,60012,600
All production numbers are expressed as clean coal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,851,831 t of ROM coal2,024,404 t of ROM coal1,370,574 t of ROM coal
Reject  ......  Subscription required  ......  Subscription required  ......  Subscription required368,873 t439,506 t327,369 t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage Commodity
Proven 4 M tons Coal (M/T)
Probable 12 M tons Coal (M/T)
Proven & Probable 16 M tons Coal (M/T)
Measured 7 M tons Coal (M/T)
Indicated 8 M tons Coal (M/T)
Measured & Indicated 15 M tons Coal (M/T)
Inferred 2 M tons Coal (M/T)

Commodity Production Costs:

CommodityUnits20152014
Cash costs Coal (M/T) USD 67.2 / ton 72.1 / ton

Financials:

Units2015
Growth Capital M USD 3.7  
Sustaining costs M USD 10.5  
EBITDA M USD 8  


Heavy Mobile Equipment as of January 15, 2016:
HME TypeModelQuantity
Continuous Miner ....................... Subscription required ....................... Subscription required
Longwall mining unit ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 11, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 11, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 14, 2022
....................... Subscription required ....................... Subscription required Subscription required May 11, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Dec 31, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Review 2018
Fact Sheet 2018
Form 10-K 2018
Annual Review 2017
Fact Sheet 2017
Form 10-K 2017
Fact Sheet 2016
Form 10-K 2016
Annual Review 2015
Annual Report 2014
Annual Report 2014
Environmental Assessment 2008
Environmental Assessment 2008
Subscription required - Subscription is required.

Aerial view:

Subscription required - Subscription is required.

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