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South Africa
Driefontein Mine

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 Location:
11 km N from Fochville, South Africa

  Regional Office:
Constantia Office Park Cnr 14th Avenue & Hendrik Potgieter Road Bridgeview House Ground floor
Private Bag X5 Westonaria 1780
Weltevreden Park
South Africa
1709
Phone  ...  Subscription required
Fax+27-11-278-9863
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
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  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Breast mining
  • Pillar extraction
Production Start...
Mine Life2031


Owners

Source: p. 59, 60
CompanyInterestOwnership
Sibanye-Stillwater Ltd. 100 % Indirect
Ownership Tree

Contractors

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Deposit Type

  • Conglomerate hosted


Summary:

Driefontein is a deep level underground gold mine located along the northern and southwestern margins of the Witwatersrand Basin in South Africa. This mine is typical of the many Witwatersrand Basin operations, which have been the primary contributors to South Africa’s production of a significant portion of the world’s recorded gold output since 1886.

The orebodies at Driefontein are laterally continuous with relatively long-range predictability. This lends to clear patterns of mineralisation governed by sedimentary characteristics.

The principle mining at Driefontein takes place on the Multiband Carbon Leader Reef. In most cases, the reef was deposited along a structurally controlled basin edge, which created discrete unconformable surfaces of deposition. This led to typical main channel, wide reef packages, which are generally >2m thick and bottom loaded.

The Witwatersrand Basin comprises a 6,000-meter vertical thickness of sedimentary rocks, extending laterally for some 350 kilometres northeast to southwest by some 120 kilometres northwest to southeast, generally dipping at shallow angles toward the centre of the Witwatersrand Basin. The Witwatersrand Basin outcrops at its northern extent near Johannesburg, but to the west, south and east it is overlaid by up to 4,000 meters of volcanic and sedimentary rocks. The Witwatersrand Basin is Archaean in age, meaning the sedimentary rocks are of the order of 2.8 billion years old.

Go ........


Mining Methods

  • Breast mining
  • Pillar extraction


Summary:

Driefontein is a large, well established, intermediate to ultra-deep level gold mine typical to similar mines on the far West Rand mining narrow tabular ore bodies. It has been in production since the 1950s with the last shafts being commissioned in the late 1990s. It includes all the permanent infrastructure required to access and mine the underground areas. All the mineral processing infrastructure is also well established and in use.

Driefontein consists of four operating shafts, No. 1, No. 4, No. 5, and No. 8 Shafts. The deposit is accessed from surface using shaft systems down to 50 Level (the lowest working level) at No. 5 Shaft, approximately 3,300m below surface.

The shafts are well maintained and will support mining operations over the LoM. The underground development is extensive, as can be expected of a mature mine of this size. All footwall access development is mined using mechanical rail-bound methods that are well understood. All stoping is completed using conventional, narrow tabular methods and as such is relatively labour intensive.

The four producing shaft systems mine various contributions from pillars and open ground. No. 2 Shaft is being used solely for hoisting purposes and a further two are being utilised for pumping. Some of the older shafts are on care-and-maintenance and have been planned for closure in 2022 following a footprint optimisation project to contain costs.

Mining method:
• Scattered-conv ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required308482519
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required906 kt3,143 kt6,042 kt5,971 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Average Weighted Resource Cut-off is 810 cm.g/t Au.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven In-Situ (UG) 7.7 Mt Gold 8.4 g/t 2.1 M oz
Probable In-Situ (UG) 4.2 Mt Gold 7.2 g/t 1 M oz
Proven & Probable In-Situ (UG) 11.9 Mt Gold 8 g/t 3 M oz
Measured In-Situ (UG) 21.1 Mt Gold 10.9 g/t 7.4 M oz
Indicated In-Situ (UG) 12.2 Mt Gold 8.5 g/t 3.3 M oz
Measured & Indicated In-Situ (UG) 33.3 Mt Gold 10 g/t 10.7 M oz
Inferred In-Situ (UG) 0.8 Mt Gold 6.6 g/t 0.2 M oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Total cash costs (sold) Gold USD 961 / oz   753 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,661 / oz†   1,141 / oz†   893 / oz†  
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,661 / oz†   1,148 / oz†   901 / oz†  
† Net of By-Product.
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Operating Costs:

Units20212020201720162015
Total operating costs ($/t milled) ZAR 3,7784,0911,022937907

Financials:

Units202120202019201820172016
Sustaining costs M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required 228.1   235   218.5  
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,046   1,156   1,052  
Revenue M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required 5,111   8,077   9,401  
Gross profit M ZAR 1,873   3,835  
Operating Income M ZAR 2,822  
Pre-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required -3,522   413   1,745  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required -648.3   1,841  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 19, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required 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
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Form 20-F 2018
Integrated Report 2018
Year-end Mineral Reserves 2018
Form 20-F 2017
Year-end Mineral Reserves 2017
Financial Review 2016
Form 20-F 2016
Year-end Mineral Reserves 2016
Form 20-F 2015
Year-end Mineral Reserves 2015
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