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Australia
Winchester South Project

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 Location:
30 km SE from Moranbah, Queensland, Australia

  Project Contacts:
Level 28, 259 George St
Sydney
New South Wales, Australia
2000
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Coal (metallurgical & thermal)
Mining Method
  • Truck & Shovel / Loader
Mine Life28 years (as of Jan 1, 2021)
The proposed Winchester South open cut metallurgical coal mine is located in Queensland’s Bowen Basin. At full capacity the mine is targeting an average ROM production of 15Mt per annum to supply the international market for about 30 years.

The Project continues to progress through the Queensland Government’s Coordinated Project approval process.


Owners

Source: p. 22,96
CompanyInterestOwnership
Whitehaven Coal Ltd. 100 % Indirect
Winchester South Coal Operations Pty Ltd, a subsidiary of Whitehaven Coal Limited, is the applicant and proponent for the Project.

Contractors

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Deposit Type

  • Sedimentary


Summary:

Winchester South is located in Queensland near the township of Moranbah in the Central part of the Bowen Basin which contains numerous important coal producing intervals in the Permian stratigraphy. The sequences of economic interest for open cut mining include the Leichhardt seams and the Vermont Upper seam of the late Permian Rangal Coal Measures as well as the and Vermont Middle Lower seam of the Fort Cooper Coal Measure. The Goonyella Middle seams of the Moranbah Coal Measures are potential targets for underground mining. The main host-rock types of these sub-groups are sandstone, siltstone with minor stratigraphic layers of conglomerate, and tuffaceous bands.

Structurally the deposit is dominated by the north-south Winchester Syncline which has been itself affected by reverse and normal faulting.

The open cut portion (Rangal and Fort Cooper seams) of the deposit is located within the subcrops along the syncline margin.

Dimensions
The Rangal and Fort Cooper seams resources trends ~15 km northwest-southeast following the Winchester South syncline and is ~6km wide at its maximum. The seams’ depth below topography is generally less than 150 m.

The Moranbah Coal Measures resource in the south-west of the project area trends northwest southeast for ~10 km with a width of ~3 km and a depth from ~400 m to ~650 m below the topographic surface for the Moranbah Coal Measures seams.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The open cut mining areas for the Project would be mined through conventional truck and shovel mining methods. The open cut mining operational areas would generally include supporting infrastructure such as haul roads, bunding, embankments, soil stockpiles, hardstands and water management structures.

Mining operations would generally occur 24 hours per day, seven days per week, with open cut mining activities and general sequence entailing:

- progressive clearing of vegetation occurring on areas required for the mining operation in accordance with prescribed procedures;
- stripping and stockpiling of soil from disturbed areas for storage and reuse in future rehabilitation of the mine landforms in accordance with prescribed procedures;
- pre-stripping of weathered tertiary sediments (e.g. unconsolidated/friable overburden, including clays) using scrapers, excavators and trucks;
- drilling and blasting (using commercial products, with the principal blasting agent being ammonium nitrate fuel oil [ANFO] only to be conducted during the daytime) for fragmentation of competent overburden and interburden as waste rock;
- removal of waste rock and inter-seam partings to expose the underlying coal seams, and placement in out-of-pit waste rock emplacements, or as infill in the mine void behind advancing mining operations, using a combination of dozers, excavators and trucks;
- mining of coal and haulage to the ROM coal handling facilities u ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Coal (metallurgical & thermal) Mt 11
All production numbers are expressed as clean coal.

Operational Metrics:

Metrics
Annual mining capacity  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual mining rate  ......  Subscription required
Reject, LOM  ......  Subscription required
ROM coal, LOM  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at April 20, 2022:

CategoryTonnage CommodityMarketable Coal
Proven 270 Mt Coal (metallurgical & thermal) 160 Mt
Probable 110 Mt Coal (metallurgical & thermal) 55 Mt
Proven & Probable 380 Mt Coal (metallurgical & thermal) 215 Mt
Measured 340 Mt Coal (metallurgical & thermal)
Indicated 330 Mt Coal (metallurgical & thermal)
Inferred 445 Mt Coal (metallurgical & thermal)
Total Resource 1,100 Mt Coal (metallurgical & thermal)



Proposed Heavy Mobile Equipment as of August 3, 2021:
HME TypeModelSizeQuantity
Dozer 86 t ....................... Subscription required
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 4, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Year-end Mineral Reserves 2018
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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