Overview
Status | Closing / Closed |
Mine Type | Open Pit |
Commodities |
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Mining Method |
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Production Start | ... |
The Canterbury mine which closed in 2021 has been transformed through earthworks and restorative planting that have rehabilitated the site into being suitable for its former uses of pastoral farming and plantation forestry.
During the year, final rehabilitation of the mine progressed with equipment operators completing rehabilitation earthworks in January 2023. Post-completion of all rehabilitation earthworks, identification of, and planning for required maintenance obligations and ongoing monitoring activities have been occurring. |
Source:
p. 104
Contractors
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Summary:
The project is located in the Canterbury Coalfield, Malvern Hills, New Zealand.
The defined resource is contained within the late Cretaceous to Early Paleocene aged Broken River Formation., formed during the Tertiary transgressive-regressive cycle between the Rangitata and Kaikoura Orogenys.
Overlying the coal measures is the Conway Formation, dominated by micaceous and quartz rich fine sandstones and mudstones indicative of littoral to shallow marine settings.
Pleistocene aged glacial outwash gravels and tills mask underlying stratigraphy over much of the area. Younger river gravels also dominate larger river valleys within the area.
Glacial derived windblown loess deposits mantle much of the area.
Igneous intrusions are present in the Malvern Hills area. Some contact metamorphism of coal measures has been observed with localized rank increases observed in some Canterbury coal samples, however none have been noted in the current resource area.
Generally the project area is structurally simple. Coal seams are not greatly affected by cross cutting faults. Seam dips range between 20° in the south to 50° the north of the current open pit area. In some locations it has been observed that localised slumping has caused overturning of the coal seams.
Depth of cover (DOC) varies from 0m at outcrop to over 200m at the Southeastern boundary of the model. The strike length of the deposit is in excess of 4km.
Summary:
Closure of the mine was announced in 2021 due to delays in consenting which lead to being unable to commit to longer term sales contracts and thus affected the economics of the mine in its current form. Should an investment decision be made to restart the mine incorporating life of mine resources, there are RPEEE that the necessary regulatory approvals could be obtained and that resources could be economically extracted in the future.
It is assumed that any future mining operation would have a minimum vertical daughter seam thickness of 0.25m as a minimum mining horizon cut-off. The current opencast operation mines some seam splits that are thinner than this
The Canterbury Coal mine utilized trucks and shovels for waste and coal movement. The operations was supported by additional equipment including dozers, graders, and water carts.
Source:
Summary:
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Production:
Commodity | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Coal (thermal)
|
Mt
| ...... * | ...... | ...... | 0.1 | 0.1 | 0.06 | 0.003 |
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Operational Metrics:
Metrics | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Waste
| ...... | ...... | 1,773,300 bcm | 1,257,000 bcm | 824,187 bcm | 594,743 bcm | 106,799 bcm |
Coal tonnes mined
| ...... | ...... | | | | | |
Reserves at June 30, 2023:
Canterbury Coal reserves not declared due to mine closure.
Canterbury Coal mineral access agreements not renewed. Reasonable prospects not met.
Category | Tonnage | Commodity |
Total Resource
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Mt
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Coal (thermal)
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Corporate Filings & Presentations:
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