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Australia
Oaky Creek Mine

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 Location:
15 km SE from Tieri, Queensland, Australia

  Address:
Oaky Creek Mine Access Road
Lilyvale
Queensland, Australia
4723
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Coal (hard coking)
  • Coal (thermal)
Mining Method
  • Longwall
Processing
  • Wash plant
  • Spiral concentrator / separator
  • CHPP
  • Flotation
  • Dense media separation
Mine Life10 years (as of Jan 1, 2020)


Owners

Source: p. 1
CompanyInterestOwnership
Itochu Minerals & Energy Australia Pty Ltd (IMEA) 10 % Indirect
Icra Oc Pty Ltd 10 % Indirect
Sumisho Coal Australia Pty Ltd (SCAP) 25 % Indirect
Glencore plc. 55 % Indirect
Oaky Creek Coal Pty Ltd (operator) 100 % Direct
Oaky Creek Coal is managed by Glencore on behalf of a joint venture between Glencore (55%), Sumisho Coal Australia (25%), Itochu Coal Resources Australia (10%) and ICRA OC (10%).

Deposit Type

  • Sedimentary


Summary:

Oaky Creek lies in the central Bowen Basin, next to Rio Tinto’s Kestrel mine. The Bowen Basin contains the largest coal reserve in Australia. This major coalproducing region contains one of the world’s largest deposits of bituminous coal. The Basin contains much of the known Permian coal resources in Queensland including virtually the entire known mineable prime coking coal. The Bowen Basin covers an area of over 60,000 square kilometres in Central Queensland running from Collinsville to Theodore.

The foreland, Early Permian to Middle Triassic Bowen Basin of eastern Queensland occupies about 160,000 km2, the southern half of which is covered by the Surat Basin. It has a maximum sediment thickness of about 10,000 metres concentrated in two N trending depocentres, the Taroom Trough to the east and the Denison Trough to the west. Deposition in the basin commenced during an Early Permian extensional phase, with fluvial and lacustrine sediments and volcanics being deposited in a series of half-graben in the east while in the west a thick succession of coals and nonmarine clastics.

Following rifting there was a thermal subsidence phase extending from the mid Early to Late Permian, during which a basin-wide transgression allowed deposition of deltaic and shallow marine, predominantly clastic sediments as well as extensive coal measures. Foreland loading of the basin spread from east to west during the Late Permian, resulting in accelerated subsidence, which allowed the deposition of a very thick succession of Late Permian marine and fluvial clastics, again with coal and Early to Middle Triassic fluvial and lacustrine clastics.

Sedimentation in the basin was terminated by a Middle to Late Triassic contractional event. Over 100 hydrocarbon accumulations have been discovered in the Bowen Basin, of which about one third are producing fields. Accumulations occur throughout the succession, but the most important reservoirs are in the Early Permian and Middle Triassic. Source rocks have been identified throughout the Permian and in the Middle Triassic and are mostly nonmarine. Proven plays comprise mostly anticlinal closures sometimes enhanced by a stratigraphic component, as well as fault rollovers. The Large volumes of methane gas are held at shallow depths within Permian coals in the north and has potential for coal seam methane developments.

The OCC (Oaky Creek Coal complex) complex mines from two seams the German Creek, which can be up to 4.5 metres thick, averaging 2.6 metres. The Aquila seam is thinner, averaging 1.4 metres, but is of complementary quality to the German Creek seam.


Mining Methods

  • Longwall


Summary:

The underground operations are modern, state of the art longwall operations with associated developmental works.

Oaky Creek North was developed as a major longwall mine and is generally a larger scale operation than the Oaky No 1 mine, thicker seams, wider longwall blocks and bigger more powerful equipment. In both mines continuous miners develop the blocks for longwall extraction, maintaining minimum developed longwall inventories of at least two blocks at all times. The underground mines at the Oaky Creek have optimum working conditions with a stable roof, floor and coalface and an above average seam thickness.

The Oaky Creek mine produces premium quality, medium volatile coking coal.

On September 30, 2021, Glencore begun using its autonomous longwall technology at the Oaky Creek underground metallurgical coal mine in Queensland following successful trials.

Developed by the Commonwealth Scientific and Industrial Research Organisation’s (CSIRO) Centre for Advanced Technologies, the underground longwall uses first-of-its-kind ExScan technology enabling the operation to be fully automated.


Crushing and Grinding


Processing

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

Source: Subscription required

Summary:

Run of mine coal is transported from the underground mines directly to the surface raw coal stockpiles by high capacity conveyor belt systems. From these stockpiles the coal is fed through rotary coal breakers, which size the coal and make an initial segregation of waste rock material. It is then conveyed to stackers which place the raw coal on a series of stockpiles one for each of the qualities being mined.

Vibrating feeders reclaim coal from these stockpiles. It is then blended to ensure consistency of quality and fed to the preparation plant for washing. The preparation plant consists of four parallel modules. Each module has a heavy medium system for treating coarse coal of 50*1mm, a primary spirals unit treating the 1.0 *0.2mm size fraction and froth flotation for processing fines of less than 0.2mm. A secondary spirals unit processes misplaced material from the primary spirals circuit.

Horizontal belt filters where fitted to replace the original drum filte ........


Production:

CommodityUnits2020201920182017201620152014
Coal (hard coking) Mt  ......  Subscription required  ......  Subscription required4.64.85.96.67.2
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019
Raw coal annual capacity 15.9 Mt of ROM coal

Reserves at December 31, 2020:

CategoryTonnage CommodityMarketable Coal
Proven 45 Mt Coal (M/T) 30 Mt
Probable 2 Mt Coal (M/T) 1 Mt
Measured 240 Mt Coal (M/T)
Indicated 355 Mt Coal (M/T)
Inferred 80 Mt Coal (M/T)


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 13, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 13, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 13, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 13, 2021
....................... Subscription required ....................... Subscription required Subscription required Aug 13, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Other 2018
Year-end Mineral Reserves 2018
Year-end Mineral Reserves 2017
Other 2016
Fact Sheet 2015
Other 2015
Other 2015
Corporate Presentation 2014
Other 2009
Other 1998
Subscription required - Subscription is required.

Aerial view:

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