Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2029 |
Source:
p. 2,376
LakeCoal was placed into Voluntary Administration on 3 October 2018. The receivers continued operation of the mines (CVC & MC) in the period 3 October 2018 to 1 April 2019. As of 1 April 2019, Great Southern Energy Pty Ltd (trading as Delta Coal (DC)) own and operate the two underground coal mines, CVC (Chain Valley Colliery) and MC (Mannering Colliery).
Contractors
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Summary:
Current approved mining operations are located within the Fassifern Seam, which is part of the Boolaroo Formation within the Newcastle Coal Measures. Overlying the Fassifern Seam are the Great Northern, Wallarah and Vales Point Seams (and their associated conglomerates and tuffs), which are part of the Moon Island Beach Formation within the Newcastle Coal Measures. Historically, mining has occurred within one or more of the Wallarah, Great Northern and Fassifern Seams at the various mines throughout the Lake Macquarie region.
The coal resource within the Fassifern seam has a low sulphur content which makes it suitable for both export and domestic power generation markets. Within the approved mining area, the Fassifern Seam lies at depth of around 150 to 210 metres (based on known and inferred contour data). The Fassifern seam is approximately 4.5 to 5.5 metres thick, with the immediate roof and floor comprising a tuffaceous claystone of varying hardnesses. Mining involves the extraction of a 3.5m section of coal (approximate) beneath the A and B plies. The A and B plies, which comprise approximately 1.0 to 1.2 metres of inferior coal, are left on the roof (Seedsman 2011) dependant on mining conditions. Up to approximately 0.8m coaly shale is left in the floor.
The Wallarah, Great Northern and Fassifern seams have been mined at CVC to produce a raw, crushed thermal coal with low sulphur, which is suitable for both export and domestic markets.
Summary:
Underground mining at Chain Valley Colliery (CVC) commenced in 1962 and since that time has extracted coal from three seams; namely, the Wallarah Seam, the Great Northern Seam and the Fassifern Seam, using a combination of bord and pillar and miniwall mining methods. Current mining activities are generally within the Fassifern Seam.
Since commencement of mining in the 1960’s, CVC has been utilising bord and pillar methods with full and partial pillar extraction as the primary means of secondary coal extraction. At the end of 2010 it was decided to change the primary extraction method to miniwall mining. Miniwall extraction commenced in September 2011.
In August 2021, CVC completed its final forecasted miniwall (S5), with mining operations continuing with bord and pillar extraction methods comprising first workings within the consent area and with secondary pillar extraction approved beneath Lake Macquarie.
All coal produced was dispatched to VPPS via conveyor from Mannering Colliery, with exception to a total of 8,320 tonnes of ROM coal reclaimed during clean-up works undertaken at the CVC coal stockpiling pad. Which was transported via public roads for sale to VPPS. During the reporting period a total of 1,383,534 tonnes was dispatched to VPPS (domestic market).
Source:
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Source:
Summary:
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Production:
| Commodity | Units | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Coal (thermal)
|
Mt
| ...... ^ | ...... | ...... | ...... | 0.4 | 1.4 | 1.2 |
All production numbers are expressed as ROM coal.
^ Guidance / Forecast.
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Operational Metrics:
| Metrics | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Coal tonnes mined
| ...... | ...... | 0.8 Mt of ROM coal | 0.4 Mt of ROM coal | 1.36 Mt of ROM coal | 1.2 Mt of ROM coal |
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