Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Longwall
- Continuous
- Bord-and-pillar
|
| Processing |
|
| Mine Life | 2039 |
Source:
p. 1,2
Seriti Resources Holdings Pty Ltd (‘Seriti’) is a broad based, 91% black owned and controlled South African mining company co- owned by four black anchor shareholders, Masimong Group, Thebe Investments, Zungu Investments (Zico) and Community Investment Holdings (CIH). Seriti Coal Community Employee, and Management Trusts own 10% of the Seriti Resources Holdings Pty Ltd.
Seriti, through its operating subsidiary, Seriti Coal Pty Ltd, operates three large- scale, opencast and underground thermal coal mines namely, New Vaal, New Denmark and Kriel Collieries.
Summary:
New Denmark Colliery reserves occur within the Vryheid Formation of the Ecca Group within the Karoo Sequence. Sixty boreholes have been drilled by the mine to the base of the Karoo Supergroup in the MRA from which geological information could be derived. The thickness of the sediments underlying the No. 4 coal seam varies between 50 and 300 m. The coal-bearing Ecca Group ranges in thickness from 125 - 360 m and is comprised of an upper shale-like stage, the Volksrust Shale Formation, the mainly sandy coal measure stage, the Vryheid Formation, and a locally developed lower silt to shale stage, the Pietermaritzburg Shale Formation. The Vryheid Formation sediments developed in the NDC area are similar to those occurring elsewhere in the Highveld and Witbank Coalfields and are comprised mainly of sandstone, with lesser amounts of sandstone / siltstone and mudstone.
New Denmark is mined the No. 4 Seam. The No. 4 Seam is comparatively narrow at an average height of 1.8 m, being as low as 1.6 m in places.
Mining Methods
- Longwall
- Continuous
- Bord-and-pillar
Summary:
New Denmark Colliery (NDC) is an underground mine and has been operational since 1983, extracting coal through both bord-and-pillar and longwall mining methods. The coal mined at NDC is transported via conveyors, from the Central Shaft to the stockyard located at Eskom’s Tutuka Power Station. The mine comprises four main operations areas, namely Central Shaft, North Shaft, Okhozini Shaft and a Crusher Plant. Infrastructure (such as offices, workshops, etc.) has been provided at all three shafts, but the main surface operations are located at Central Shaft. The coal is transported via conveyors, from the Central Shaft and the North Shaft, to the stockyard located at Eskom’s Tutuka Power Station.
New Denmark is one of South Africa’s deepest coal mining operations, operating to a depth of 200m. It is a mechanised operation with 11 CM sections moving to 12 CM sections in FY23. The LW is in the process of being phased out of the production fleet and stopped producing in April 2021.
Source:
Summary:
NDC proposes to install a pyrolysis plant to incinerate waste produced on the mine and convert the energy into electricity.
Production:
New Denmark mine was acquired from Anglo American in March 2018 by Seriti Resources Holdings Proprietary Ltd.
2018 full year production numbers have not been reported.
| Commodity | Units | 2020 | 2019 | 2017 | 2016 | 2015 | 2014 |
|
Coal (thermal)
|
Mt
| ...... | ...... | 3.4 | 2.5 | 2.8 | 3.8 |
All production numbers are expressed as ROM coal.
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Operational Metrics:
| Metrics | 2019 |
|
Raw coal annual capacity
| 5 Mt |
Reserves at December 31, 2017:
| Category | Tonnage | Commodity |
|
Proven
|
44.3 Mt
|
Coal (thermal)
|
|
Probable
|
51.4 Mt
|
Coal (thermal)
|
|
Proven & Probable
|
95.7 Mt
|
Coal (thermal)
|
|
Measured & Indicated
|
80.5 Mt
|
Coal (thermal)
|
Heavy Mobile Equipment as of August 11, 2021:
| HME Type | Quantity |
|
Highwall / Continuous Miner
|
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|
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Aerial view:
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