South Africa

Greenside Mine

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Coal (thermal)
Mining Method
  • Bord-and-pillar
  • Continuous
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SnapshotGreenside colliery forms part of the South African Coal Estate (SACE) complex, together with Khwezela North (formerly known as Landau) and Khwezela South (previously known as Kleinkopje).

Owners

SourceSource
CompanyInterestOwnership
Thungela Resources Limited 90 % Indirect
Ownership Tree
Thungela Resources Limited holds 90% of the Greenside Colliery in South Africa with the remaining 10% held collectively by an employee partnership plan and a community partnership plan.

Contractors

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Deposit type

  • Sedimentary

Summary:

Greenside colliery is located in the Witbank Coalf ield where f I've coal seams are present. These consists of, from bottom, the No 1 Seam, sequentially to the No 5 Seam at the top, with inter-seam partings consisting of mainly shale or siltstone and sandstone, with thicknesses ranging between 1.5 m and 23 m. The No 4 Seam is currently the only contributor to the colliery’s export product.

The colliery is sub-divided into two distinct domains, by a major northwest, southeast trending normal fault system with a measured maximum throw of 30 m in the southeast. The throw gradually
decreases to a ~1 m throw towards the northeast. Mining has been constrained by the fault system, with development from the east and west, stopping on approaching the fault zone. Several dolerite dykes have been identif ied by drilling and mining, but the impact on mining is limited to occasional cases of poor ground conditions experienced during mining.

Surface material at Greenside consists of weathering products of the sandstones, siltstones and mudstones of the Vryheid Formation, with isolated patches of dolerite in the southwestern part of the GAR. The top layer consists of reddish-brown sandy soil, with clayey-sandy subsoil below.

Weathering generally does not extend deeper than approximately 12 m at Greenside, except where adjacent to dolerite dykes and close to surface water bodies. In these instances, weathering may reach up to 17 m below the surface. Weathering negatively affects the mineable Coal Resource, but rarely has an impact of the physical mining operation in terms of mining method and design.

Strata at Greenside are typical of the Witbank Coalfield, with all five coal seams being present on the property. Underlying the coal sequence of the Vryheid Formation are glacial deposits of the Dwyka Group, which accumulated on the erosional pre-Karoo basement surface. The distribution of the lower seams (No 1 and No 2 Seams) is controlled by the underlying palaeotopography while that of the uppermost No 5 Seam is controlled by the level of the present-day erosion. The seams are generally flat lying and gently undulating.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Production

CommodityUnits20222021202020192018201720162015
Coal (thermal) Mt  ....  Subscribe  ....  Subscribe  ....  Subscribe4.84.53.83.93.9
All production numbers are expressed as clean coal.

Operational metrics

Metrics202220212020201920182017
Coal tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe4,974 kt of ROM coal5,057 kt of ROM coal4,870 kt of ROM coal

Production Costs

CommodityUnits202220212020201920182017
Cash costs (sold) Coal (thermal) ZAR  ....  Subscribe  ....  Subscribe
Cash costs Coal (thermal) ZAR 573 / t   567 / t   617 / t  
Total cash costs (sold) Coal (thermal) ZAR  ....  Subscribe  ....  Subscribe  ....  Subscribe

Financials

Units202220212020201920182017
Capital expenditures M ZAR  ....  Subscribe  ....  Subscribe  ....  Subscribe
Revenue M ZAR  ....  Subscribe 2,577   2,874   2,891  

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 12, 2023

EmployeesContractorsTotal WorkforceYear
...... Subscription required 2021
...... Subscription required ...... Subscription required ...... Subscription required 2020
...... Subscription required ...... Subscription required ...... Subscription required 2019
...... Subscription required ...... Subscription required ...... Subscription required 2018
...... Subscription required ...... Subscription required ...... Subscription required 2017

Aerial view:

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