• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Australia
Grasstree Mine (Capcoal Operation)

This page is not tailored to
devices with screen width under 750 px.
 Location:
23 km SW from Middlemount, Queensland, Australia

  Regional Office:
201 Charlotte Street
GPO Box 1410
Brisbane
Queensland, Australia
4001
Phone  ...  Subscription required
Fax+61-(0)-7-3834-1366
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Australia
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeUnderground
Commodities
  • Coal (metallurgical)
  • Coal (hard coking)
Mining Method
  • Longwall
Production Start...
Grasstree mine reached its end of life.


Owners

Source: p. 36
CompanyInterestOwnership
Mitsui & Co., Ltd. 30 % Indirect
Anglo American plc. 70 % Indirect
Anglo Coal (Capcoal Management) Pty Limited (operator) 100 % Direct
Capcoal complex is a joint venture between Mitsui Coal Holdings (30 per cent equity share) and Anglo American who is the operator of the mine.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Sedimentary


Summary:

The Grasstree is located on the north-western flank of the Bowen Basin, a sedimentary basin comprising Permian to Triassic age geology. A veneer of more recent Tertiary and Quaternary age sediments typically overlie the Bowen Basin strata.

The relevant geology in the vicinity of the Grasstree longwall mining area includes:
- Quaternary alluvium associated with German Creek and Little Parrot Creek;
- A veneer of Tertiary sediments of the Duaringa Formation;
- Permian coal measures including the target German Creek Seam (GC seam).

The Permian coal measures include the Rangal Coal Measures, the Burngrove Formation, the Fort Cooper Coal Measures (also known as the Fairhill Formation), the Macmillan Formation and the German Creek Formation. The coal measures comprise a sedimentary sequence with interbedded coal seams, including the target GC seam. The upper profile of the coal measures has been extensively and deeply weathered. The weathered coal measures outcrop at the surface across the southern portion of the longwall mining area and much of the surrounding area, forming undulating sandy plains. In the northern portion of the longwall mining area, the coal measures sub-crop under the Tertiary sediments and dip to the east. As the coal measures dip to the east, the depth of the GC seam increases from approximately 330 m in the south-western part of the Grasstree longwall mining area to a maximum depth of approximately 540 m at the north-eas ........


Mining Methods

  • Longwall


Summary:

A longwall is a complex system of mining equipment that incorporates hydraulic roof supports (called ‘chocks’ or ‘shields’), coal cutting and coal transport equipment. Longwall mining involves extracting rectangular panels of coal, typically around 150 m to 400 m wide, up to 7 km long and 2 m to 5 m thick. Longwall panels are defined by access roadways that are constructed around the perimeter of each longwall panel. These roadways provide access for the installation of the longwall mining equipment, mine workers, and equipment and services.

Longwall mining involves a coal shearer travelling back and forth across the width of the longwall panel, starting from the furthest point progressively removing the coal from the panel back to the main headings. The shearer cuts the coal from the coalface on each pass and delivers the coal to a face conveyor that runs along the full width of the longwall. The face conveyor transports the coal from the coalface to another conveyor in an access roadway. Coal is then transported to the surface via a series of connecting underground conveyors.

The roof at the coalface is held up by a series of hydraulic roof supports. The supported section of roof provides space for the shearer, face conveyor and man access. After each shear of coal is removed, the face conveyor, hydraulic roof supports and the shearer are moved forward.

The roof immediately above the mined seam collapses into the void (called a ‘goaf’) tha ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Coal (hard coking) t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required5,909,1685,686,6547,900,809
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required7,127,860 t of ROM coal7,609,721 t of ROM coal7,404,229 t of ROM coal
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityMarketable Coal
Proven 0.8 Mt Coal (hard coking) 0.8 Mt
Measured 61.1 Mt Coal (hard coking)
Indicated 20.1 Mt Coal (hard coking)
Measured & Indicated 81.1 Mt Coal (hard coking)



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsYear
Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Environmental Assessment 2018
Year-end Mineral Reserves 2018
Year-end Mineral Reserves 2017
Annual Report 2016
Fact Sheet 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.