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Australia
Tarrawonga Mine (Werris Creek)

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 Location:
39 km N from Gunnedah, New South Wales, Australia

  Address:
PO Box 600
Gunnedah
New South Wales, Australia
2380
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (metallurgical)
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2032
Gunnedah open cut mines consist of Tarrawonga mine and Werris Creek mine.


Owners

Source: p. 8
CompanyInterestOwnership
Whitehaven Coal Ltd. 100 % Indirect
Tarrawonga Coal Pty Ltd (operator) 100 % Direct
Tarrawonga Coal Mine (Tarrawonga) (formerly known as East Boggabri Coal Mine) is an open cut coal mine owned and operated by Tarrawonga Coal Pty Limited, a wholly owned subsidiary of Whitehaven Coal Limited.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The Tarrawonga Coal Mine is located in the Gunnedah Basin, in the Gunnedah Coalfield, which contains sedimentary rocks, including coal measures, of Permian and Triassic age. Regionally, there are two coal-bearing sequences in the Gunnedah Basin, namely:

- Early Permian Bellata Group (comprising the Maules Creek sub-basin and Mullaley subbasin, separated by the Boggabri Ridge);
- Late Permian Black Jack Group.

The Tarrawonga coal resource is located within the Maules Creek sub-basin of the Early Permian Bellata Group. The target coal seams within the Maules Creek sub-basin are contained within the Maules Creek Formation. They subcrop on low hills to the west of theTarrawonga area and dip towards the east.

Target coal seams within the open cut extent are Braymont, Bollol, Creek, Jeralong, Jeralong Lower, Merriown, Merriown Lower, Velyama, Nagero.

Individual coal seams range up to approximately 4.5 m thick, and average 1.5 m. They onlap the Boggabri Ridge to the west of the Tarrawonga area and thicken towards the east.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mine operations at Tarrawonga involve open cut mining with a truck and excavator/shovels fleet to produce up to 3.5 Mtpa ROM. The extent of mining operations were reduced in February 2021 in ML 1693 to avoid mining the Upper Namoi alluvium and within 200 m of Goonbri Creek.

Mining is approved at Tarrawonga up until 2030 and incorporates the following key activities:
• Continued development of coal mining operations in the Maules Creek Formation to facilitate a Run of Mine (ROM) coal production rate of up to 3.5 Million tonnes per annum (Mtpa).
• Transport of ROM coal via the approved haulage route to the Whitehaven Coal Handling Preparation Plant (CHPP), or to the Boggabri CHPP via internal haul roads, subject to a suitable commercial agreement between Boggabri and Tarrawonga Mines;
• Progressive backfilling of the mine void behind the advancing open cut mining operation with waste rock and minor quantities of reject material from the Gunnedah CHPP; and
• Progressive development and use of new haul roads and internal roads, water management infrastructure as well as stockpiles, laydown areas and gravel/borrow areas.

The ongoing development of Tarrawonga will involve the sequential clearing of vegetation and removal of soil (land preparation) prior to the removal of overburden and interburden, mining of the identified coal resource and progressive backfilling and rehabilitation of mined-out areas.

By the end of the Mine ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits2023202220212020201920182017
Coal (metallurgical) t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required2,075,0293,376,226
All production numbers are expressed as clean coal. ^ Guidance / Forecast.
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Operational Metrics:

Metrics202320222021202020192018
Coal tonnes mined  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required23,831,308 bcm21,814,461 bcm17,086,835 bcm
Reject  ......  Subscription required  ......  Subscription required  ......  Subscription required61,101 t291,683 t558,563 t
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,507,031 t of ROM coal2,258,954 t of ROM coal2,044,658 t of ROM coal
^ Guidance / Forecast.
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Reserves at August 31, 2023:

CategoryOreTypeTonnage CommodityMarketable Coal
Proven In-Situ (OP) 16 Mt Coal (metallurgical) 13 Mt
Probable In-Situ (OP) 9 Mt Coal (metallurgical) 7 Mt
Proven & Probable In-Situ (OP) 25 Mt Coal (metallurgical) 20 Mt
Measured In-Situ (OP) 31 Mt Coal (metallurgical)
Measured In-Situ (UG) 10 Mt Coal (metallurgical)
Indicated In-Situ (OP) 16 Mt Coal (metallurgical)
Indicated In-Situ (UG) 15 Mt Coal (metallurgical)
Measured & Indicated In-Situ (OP) 48 Mt Coal (metallurgical)
Measured & Indicated In-Situ (UG) 25 Mt Coal (metallurgical)
Inferred In-Situ (OP) 13 Mt Coal (metallurgical)
Inferred In-Situ (UG) 14 Mt Coal (metallurgical)
Total Resource In-Situ (OP) 61 Mt Coal (metallurgical)
Total Resource In-Situ (UG) 39 Mt Coal (metallurgical)


Water Supply
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Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelSizeQuantity
Bulldozer ....................... Subscription required ....................... Subscription required
Bulldozer ....................... Subscription required ....................... Subscription required
Drill ....................... Subscription required
Excavator ....................... Subscription required 25 t ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Truck (dump) ....................... Subscription required ....................... Subscription required
Truck (dump) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (water) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Sep 22, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 22, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 22, 2023
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
Annual Report 2023
Annual Report 2022
Annual Review 2022
Mine Closure Plan 2022
................................... Subscription required 2021
................................... 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
................................... Subscription required 2019
................................... Subscription required 2019
Annual Review 2018
Annual Report 2017
Annual Review 2017
Annual Review 2016
Annual Review 2015
Annual Report 2014
Environmental Assessment 2012
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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