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South Africa
Middelburg Mines Services (MMS) Mine (Seriti Power (SAEC) Operation)

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 Location:
18 km SE from Emalahleni, South Africa

  Address:
R575 Van Dyksdrift Road
Middelburg
South Africa
1050
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
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  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
Production Start...
Mine Life2034
Middelburg Mining Services (MMS) (formerly the Wolwekrans and Ifalethu Mines) comprises two open-cast mining operations Middelburg North and Middelburg South.


Owners

Source: p. 1
CompanyInterestOwnership
Seriti Resources Holdings Proprietary Ltd. 90 % Indirect
Johannesburg, 1 June 2021: Following the fulfilment on 15 May 2021 of all conditions precedent in respect of Seriti’s acquisition of South32 SA Coal Holdings Proprietary Limited (SAEC), Seriti is pleased to advise that the transaction has now closed and that it has assumed management of these operations from 1 June 2021.

SAEC has been renamed Seriti Power, and comprises the Khutala, Klipspruit, and Middelburg Mines Services (MMS) North and South mines, which provide coal to the Kendal and Duhva power stations, as well as export coal via the Richards Bay Coal Terminal. Seriti holds a 90% interest in Seriti Power, while an Employee Trust and Community Trust each hold a 5% interest.

Contractors

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Deposit Type

  • Sedimentary


Summary:

In the Wolvekrans area, sandstone filled fluvial channels are prominent below the No.5 Seam through to the No.2 Seam. In the Douglas area, a prominent fluvial sandstone channel is developed between No.2 Seam and No.2A Seam. Running in a north south direction it has affected the remaining No.2 Seam resource in the Douglas mining area. The No.2 Seam is generally thinner along the channel and intra-seam partings affect coal quality in the channel-affected area.

Coal seams at Wolvekrans-Middelburg Complex (WMC) are associated with glacio-fluvial and upper deltaic plain sedimentation. The main seams of economic importance include the No.4L, No.2 and No.1 Seams, which are generally thick and laterally continuous.

No.5 Seam (0 to 2 m) is the uppermost seam and is discontinuous mainly due to weathering. The relatively thin No.5 Seam was deposited during a short period of peat accumulation in a relatively unstable basin. The seam is of good coal quality but often friable. The average thickness were fully developed ranges between 1.5 m and 2.0 m. Only isolated small areas remain at Wolvekrans where the No.5 Seam is adequately developed to be considered for mining.

No.4L Seam (0.5 to 5 m) is present across most of the WMV area and is overlain by two lesser seams, firstly the poor quality No.4U Seam (No.4U excluded from Coal Resources), and secondly the good quality but thin No.4UA Seam. The No.4L Seam follows the No.2 Seam in economic importance at Wolv ........


Mining Methods

  • Truck & Shovel / Loader
  • Dragline


Summary:

The mines are divided into nine main sections, with mining at both consisting of opencast operations with coal extracted by dragline and truck and shovel at a peak combined production rate of approximately 26.4 Mtpa ROM coal.

Mining is carried out at Wolvekrans and Middelburg using open cut mining methods, comprising a mix of dragline and truck/shovel. The mining areas are divided into pits of varying shapes with the pit configuration based on economic parameters and other drivers, such as surface infrastructure and environmental constraints.

Wolvekrans is the result of the merger of five different collieries within mining in its current configuration having commenced in 2010.

The No.1, No.2 and No.4 Seams throughout much of the mining area have been previously mined as part of underground operations by a bord and pillar method at the old Douglas underground mine. Remnants of these seams are now being recovered as part of the proposed open cut operations.

Coal mining is primarily carried out by Cat 994 loader and Cat 789 rear dump haul trucks. This equipment is considered suitably sized in order to extract coal seams of at least 1 m in thickness. Unlike excavators, loaders also work the coal seam from the floor, and are suited to a process where equipment is not placed on top of the coal.

Middelburg pits are typically very shallow and so the dragline can excavate the necessary depth to uncover the coal seam. As such, ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2020 *2017201620152014
Coal (thermal) Mt  ......  Subscription required *14161613
All production numbers are expressed as clean coal. * Average annual production reported in 2020
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Operational Metrics:

Metrics2014
Annual production capacity 17 Mt of coal (thermal) clean coal

Reserves at June 30, 2020:
Cut-off grade
Coal Resources: > 1.0m seam thickness, < 45% ash, > 17.9% volatile matter.
Coal Reserves: > 1.0m seam thickness, > 2,870 Kcal/kg CV, < 45% ash, > 17.9% volatile matter.

CategoryOreTypeTonnage CommodityMarketable Coal
Proven In-Situ (OP) 338 Mt Coal (thermal) 213 Mt
Probable Stockpiles 5 Mt Coal (thermal)
Probable In-Situ (OP) 24 Mt Coal (thermal) 16.7 Mt
Proven & Probable Stockpiles 5 Mt Coal (thermal)
Proven & Probable In-Situ (OP) 362 Mt Coal (thermal) 230 Mt
Measured In-Situ (OP) 609 Mt Coal (thermal)
Indicated Stockpiles 5 Mt Coal (thermal)
Indicated In-Situ (OP) 17 Mt Coal (thermal)
Inferred In-Situ (OP) 178 Mt Coal (thermal)
Total Resource Stockpiles 5 Mt Coal (thermal)
Total Resource In-Situ (OP) 804 Mt Coal (thermal)


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of March 16, 2015:
HME TypeModelQuantity
Dozer ....................... Subscription required ....................... Subscription required
Dozer ....................... Subscription required ....................... Subscription required
Dragline ....................... Subscription required ....................... Subscription required
Drill ....................... Subscription required ....................... Subscription required
Drill ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Other 2017
Press Release 2017
Annual Report 2016
Corporate Presentation 2016
Other 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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