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South Africa
New Vaal Mine

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 Location:
10 km E from Vanderbijlpark, South Africa

  Address:
Private Bag X414, Three Rivers
Gauteng
South Africa
1935
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Strip mining (roll-over)
  • Truck & Shovel / Loader
  • Dragline
Processing
  • Wash plant
  • Dense media separation
Mine Life12 years (as of Jan 1, 2017)
Johannesburg, 1 March 2018: Seriti is pleased to announce the completion of the purchase of New Vaal, New Denmark and Kriel mines from Anglo American, as well as various mine life- extension projects and closed mines. Signing of the transaction was announced in April 2017, at a purchase price of R2.3 billion.

The three mines supply approximately 24Mtpa of thermal coal to Eskom’s Lethabo, Tutuka and Kriel power stations which collectively account for almost a quarter of South Africa’s current power supply.


Owners

Source:
CompanyInterestOwnership
Seriti Resources Holdings Proprietary Ltd. 91 % Indirect
Seriti Coal Pty Ltd 100 % Direct
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.

Deposit Type

  • Sedimentary


Summary:

The New Vaal colliery coal reserves are located in the northernmost part of the Vereeniging – Sasolburg coalfield in an area locally referred to as the Cornelia coalfield. The coalfield field occurs on the northern edge of the Karoo basin.

The Permian age Ecca Series are part of the Karoo System. The Vryheid Formation of the Ecca Series contains three major coal seams, the Top, Middle and Bottom seams. The Dwyka Series, a sequence of glacial and fluvio-glacial sediments occurs below the coal measures and lie unconformably on the Transvaal System. In the New Vaal area the Transvaal Dolomite underlies the Karoo except for a narrow strip of Black Reef Quartzite that occurs along the eastern edge of the New Vaal mine area.

The Dwyka series is not continuous across the whole area and, in places the coal measures lie on the Dolomite. The contact between the Dolomite and the overlying Karoo rocks is a glaciated surface that was previously affected by structural features of the Dolomite such as doline structures.

Quaternary age river alluvium consisting of unconsolidated basal river gravels, sands, silts and clays were deposited onto the eroded Karoo surface. Wind blown, (aeolian) sand occurs in the upper few metres of this Quaternary sequence that ranges from 4 to 30 metres in thickness.

The New Vaal mine floor is undulating but the overall dip of the coal bearing Ecca Series is 2 to 3 degrees to the south. Two major geological features occur and are significant in the geohydrological regime of the area. These are:
- A dolerite dyke swarm that strikes east west through the northern part of the New Vaal reserves. The swarm zone is up to 60 metres wide and in places individual dykes are greater than 20 metres in width.
- The Viljoensdrift fault, also locally called the Valley fault, is a graben structure that strikes east west and forms the southern boundary of the New Vaal mine and separates it from the old Cornelia Colliery to the south. It has downthrown the Karoo rocks 60 to 100 metres below their original elevation. This graben varies between 1,3 and 2 kilometres in width.

The New Vaal coalfield contains three main coal seams, termed the top (9.7m), middle (6.0m), and bottom (4.9m) seams. Although all three seams had been mined previously, most of the old workings are in the middle seam.


Mining Methods

  • Strip mining (roll-over)
  • Truck & Shovel / Loader
  • Dragline


Summary:

The New Vaal utilises opencast strip mining methods to mine the remnant coal pillars that was a result of the underground extraction mining methods practiced in the area in the 1960’s. The colliery has three different pits: namely North, South, and West pit with a dragline in each pit. The draglines remove the hard overburden from the pit and place it on the spoil heap. The mining operation at New Vaal Colliery is divided into three sections: namely Sand Stripping, Draglines, and Coaling.


Crushing and Grinding


Processing

  • Wash plant
  • Dense media separation

Source: Subscription required


Production:
New Vaal mine was acquired from Anglo American in March 2018 by Seriti Resources Holdings Proprietary Ltd.

2018 full year production numbers have not been reported.

CommodityUnits20192017201620152014
Coal (thermal) t  ......  Subscription required15,109,00015,894,80014,148,10016,672,800
All production numbers are expressed as clean coal.
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Operational Metrics:

Metrics2019
Raw coal annual capacity  ......  Subscription required
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Reserves at December 31, 2017:

CategoryTonnage CommodityMarketable Coal
Proven & Probable 203.8 Mt Coal (thermal) 192.6 Mt
Measured 382.3 Mt Coal (thermal)
Indicated 224.7 Mt Coal (thermal)
Measured & Indicated 607 Mt Coal (thermal)
Inferred 90.7 Mt Coal (thermal)


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2020
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2020
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Corporate Presentation 2015
Year-end Mineral Reserves 2015
Other 2013
Other 2009
Other 2003
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