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Australia
New Oakleigh Mine (West Moreton Operation)

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 Location:
1.7 km NW from Rosewood, Queensland, Australia

  Regional Office:
3/22 Magnolia Drive
Brookwater
Queensland, Australia
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Overview

StatusClosing / Closed
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
Completion of mining at New Oakleigh in February 2013. Final coal was processed in May 2013. Rehabilitation works at this site are being undertaken.


Owners & OPERATOR

 
CompanyInterestOwnership
New Hope Group Co., Ltd. (operator) 100 % Direct

Deposit Type

  • Sedimentary


Summary:

The rehabilitation area consisted of approximately 100 ha with a significant fall of approximately 100 m (average ˜10% slope) from the top of the catchment to the discharge point. During bulk earthworks, final profiling and the early stages of revegetation a number of erosion and sediment controls were implemented with a sediment basin required prior to the discharge point to capture sediment mobilised from the rehabilitation area and prevent non­compliant discharges. Using a traditional approach to sediment basin sizing, a basin volume of approximately 80 ML would have been required, which due to its size, would need to be a permanent feature of the final landform.

A HES basin was considered as an alternative to a traditional sediment settling basin and modelling found that it offered a much smaller volumetric requirement, with an improved proportion of stormwater treated and allowed a flow­through approach rather than batch capture and treatment of stormwater.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Oakleigh West Pit was actively mined as an open cut operation until 2013 with progressive rehabilitation being undertaken as areas became available. Following the cessation of operations, ongoing rehabilitation work has been undertaken on the remaining mined areas.

Over a period of several years the open cut void was progressively backfilled with spoil in order to create a permanent free­draining final landform that is similar to the pre­mining topography, representing current best practice in mine rehabilitation.


Crushing and Grinding


Processing



Production:

CommodityUnits20132012
Coal (thermal) Mt 0.30.4
All production numbers are expressed as clean coal.


Combined reserves/resources are reported under West Moreton Operation



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 25, 2021
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Corporate Filings & Presentations:

DocumentYear
Press Release 2017
Annual Report 2013
Annual Report 2012
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Aerial view:

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