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Australia
Appin Mine (Illawarra Operation)

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 Location:
2 km SW from Appin, New South Wales, Australia

  Address:
Level 3, Enterprise 1 Building, Innovation Campus, Squires Way
North Wollongong
New South Wales, Australia
2500
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Coal (metallurgical)
Mining Method
  • Longwall
Processing
  • Wash plant
  • Flotation
  • Dense media separation
Mine Life19 years (as of Jan 1, 2019)


Owners & OPERATOR

Source: p. 8
CompanyInterestOwnershipInvestor's Info
South32 Corp. 100 % Indirect
Endeavour Coal Pty Ltd. (operator) 100 % Direct
Illawarra Metallurgical Coal is 100 per cent owned by South32 Limited.

Appin Mine is owned and operated by Endeavour Coal Pty Ltd., a subsidiary company of Illawarra Coal Pty Ltd (ICHPL) which is 100% owned by South32.

Deposit Type

  • Sedimentary


Summary:

Illawarra Coal's assets are located in the southern portion of the Sydney Basin within the Southern Coalfield.

The full sequence of Triassic to Permian sedimentary units are present within the Project areas, including the Permian Shoalhaven Group, Illawarra Coal Measures and the overlying Triassic Narrabeen Group and Hawkesbury Sandstone.

The economic coal seams relevant to the Project areas are hosted within the Illawarra Coal Measures. The general description of the most relevant units is provided below:

* Bulli Coal is the uppermost coal unit in the Illawarra Coal Measures. It is extensively worked in the northern portions of the Southern Coalfield. The Bulli Seam is the main economic coal seam for the BSO (Bulli Seam Operation (West Cliff and Appin)). It averages approximately 2.6 m thick across Appin, gaining a maximum thickness of approximately 4.1 m. The Bulli Seam thins to approximately 1.4 m in the south eastern part of West Cliff and also south west of Appin. Overall, the coal thickness for the Bulli Seam is generally consistent across BSO in the mined out areas and planned areas of longwall mining;

* The Loddon Sandstone is generally between 7 m to 10 m thick;

* Balgownie Coal consists of high ash coal and carbonaceous shale and is generally less than 1 m thick;

* Lawrence Sandstone is 7 m to 11 m thick;

* Cape Horn Coal is a carbonaceous shale to bright coal, typically less than 0.5 m thick;

* Eckersley Formation consists of thin coals, minor carbonaceous shale, laminites and black shales;

* Wongawilli Coal ranges between 7 to 11 m thick and consists of inter-banded tuffs, carbonaceous shales and coal. The basal 4 m contains coal of economic potential and is currently mined at the Dendrobium Mine. The Wongawilli Coal is subdivided into 13 individual plies and 12 partings units and into three working sections as shown in Figure 4-3. The working sections are based on mining experience and are the most relevant division of the seam. The Second Machine Band working section is generally the target of mining at Dendrobium.

* Wongawilli Seam is present within the Appin and West Cliff areas, although a viable working section is not interpreted to occur in the area;

* American Creek Seam is a thin coal inter-bedded with carbonaceous claystone, and,

* Tongarra Coal is a thin coal inter-bedded with carbonaceous siltstone and claystone.

The structure over the Project area is relatively well defined based on the geological data available. Seam dips over the Project area are generally low (1° to 3°). There are localised variations in seam structures. Relatively steeply dipping strata occurring at the Dendrobium Mine between Areas 2 and 3 where dips reach 7° - 8° in an area associated with a small scale fault. The localised steeper dip zones are also often associated with underlying igneous intrusions and domes.

Faulting has been identified across the BSO and Dendrobium Operation. The faults have been identified by 3D seismic, 2D seismic, underground mapping, underground drilling, de-gassing intra-seam holes and, to a lesser extent, interpreted from floor contours generated from drill-hole data. The faults are predominately extension normal faults, although low angle thrust faults have also been identified (such as Maingate 12 at Dendrobium).

Faulting affects the BSO area more significantly than at the Dendrobium Operation. Fifty-one faults have been interpreted at the BSO area to a level of confidence that allows them to be incorporated in the geological model. The throw on the Appin faults average approximately 20 m, although the maximum throw is 90 m; approximately 13 faults have throws of greater than 5 m. As the average thickness of the Bulli Seam is less than 2.7 m, a throw of more than 2 to 3 m can adversely impact the potential for eventual economic extraction. This was demonstrated at West Cliff where LW 22 to 24 were constrained due to faulting. The Appin mine plan has been laid out to avoid the significant faulting identified by exploration to date.


Mining Methods

  • Longwall


Summary:

The Bulli Seam underground longwall mining operations have transitioned wholly to the Appin areas (Area 9 and Area 7) following completion of longwall mining activities at West Cliff in early 2016. West Cliff/Appin North merged with Appin Mine in February 2016.

The coal seams are extracted via conventional retreat longwall methods with a single longwall currently operating in each mine.


Crushing and Grinding


Processing

  • Wash plant
  • Flotation
  • Dense media separation

Source: Subscription required

Summary:

All coal produced at the BSO is processed at the West Cliff Coal Preparation Plant, which incorporates:
* Dense medium drum;
* Primary dense medium cyclone (“DMC”);
* Secondary DMC;
* Froth flotation cells;
* Thickening cyclone; and,
* Horizontal belt filters.

Mineral processing facilities include the West Cliff Coal Preparation Plant (CPP), the West Cliff Emplacement Area and the Dendrobium CPP (located at the Port Kembla Steelworks). The majority of ROM coal from Appin Mine is directed to the West Cliff CPP for processing. The Emplacement Area is used to emplace coal wash from the West Cliff CPP and Dendrobium CPP.

ROM Coal is transported to West Cliff CPP by:
• Coal trucks from the Appin East (Central) site, along Appin and Wedderburn Roads.
• Bulk coal winder at Westcliff (Appin North) transported underground from Appin Area 7 and 9.

ROM Coal from Appin Mine is also directed to the Dendrobium CPP on an ‘as r ........


Production:

CommodityUnits201920182017201620152014
Coal (metallurgical) Mt  ......  Subscription required *  ......  Subscription required *3.4 *4.9 *5.6 *4.1 *
All production numbers are expressed as clean coal. * Combined production for West Cliff (Appin North) Mine and Appin Mine
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required6.1 Mt of ROM coal3.8 Mt of ROM coal3.3 Mt of ROM coal
Subscription required - Subscription is required.

Reserves at June 30, 2019:

CategoryTonnage Commodity
Proven 21 Mt Coal (metallurgical)
Probable 93 Mt Coal (metallurgical)
Proven & Probable 114 Mt Coal (metallurgical)
Measured 140 Mt Coal (metallurgical)
Indicated 313 Mt Coal (metallurgical)
Inferred 342 Mt Coal (metallurgical)
Total Resource 796 Mt Coal (metallurgical)


Heavy Mobile Equipment as of March 10, 2015:
HME TypeModelQuantity
Continuous miner ....................... Subscription required 3
Continuous miner ....................... Subscription required 3
Continuous miner ....................... Subscription required 1
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2017
Annual Report 2016
Annual Report 2015
Other 2015
Annual Report 2014
Subscription required - Subscription is required.

Aerial view:

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