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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
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Breast mining
  • Pillar extraction
  • Scattered stoping
Production Start...
Mine Life2032
Driefontein consists of four vertical operating shafts, No. 1 Shaft, No. 4 Shaft, No. 5 Shaft and No. 8 Shaft, extending down to 50 Level (the lowest working level) at No. 5 Shaft, approximately 3,300m below surface.

Ore from all the shafts is processed at Driefontein No. 1 Plant. The production from No. 4 Shaft and No. 5 Shaft is conveyed underground to No. 2 Shaft on 22 and 24 levels for hoisting.


Owners

Source: p. 12
CompanyInterestOwnership
Sibanye-Stillwater Ltd. 100 % Indirect
Sibanye-Stillwater owns and manages 100% Driefontein operation.

Contractors

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Deposit Type

  • Conglomerate hosted


Summary:

Driefontein is located along the West Wits Line that forms part of the Far West Rand of the Witwatersrand Basin. The Witwatersrand Basin comprises a 6.000m vertical thickness of sedimentary rocks, extending laterally for some 350km northeast to southwest by some 150km 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 4,000m of volcanic and sedimentary rocks.

Gold mineralisation occurs within laterally extensive quartz-pebble conglomerates called reefs, which are developed above unconformable surfaces. As a result of faulting and primary controls on mineralisation processes, the goldfields are not continuous and are characterised by the presence or dominance of different reef units. The reefs are generally less than two metres in thickness and are widely considered to represent laterally extensive braided fluvial deposits or unconfined flow deposits, which formed along the flanks of alluvial fan systems around the edge of an inland sea. Dykes and sills of dolerite composition are developed within the Witwatersrand Basin and are associated with several intrusive and extrusive events.

Gold generally occurs in native form, often associated with pyrite, carbon and uranium. Pyrite and gold within the reefs display a variety of forms, some obviously indicative of detrital tran ........


Mining Methods

  • Breast mining
  • Pillar extraction
  • Scattered stoping


Summary:

Driefontein is a mature intermediate to ultra-deep level gold mine. It consists of four vertical operating shafts, No. 1 Shaft, No. 4 Shaft, No. 5 Shaft and No. 8 Shaft, extending down to 50 Level (the lowest working level) at No. 5 Shaft, approximately 3,300m below surface.

Ore from all the shafts is processed at Driefontein No. 1 Plant. The production from No. 4 Shaft and No. 5 Shaft is conveyed underground to No. 2 Shaft on 22 and 24 levels for hoisting.

As Driefontein is a well-developed orebody that has been extensively mined, the choice of mining method is constrained by this historical mining. The orebody is narrow tabular in nature and is accessed through vertical shafts, with evenly spaced development in the footwall. On reef development is advanced on true dip, ledged and then stoped to either side in the direction of strike. All mining at Driefontein is conventional in nature and is consistent with other similar orebodies.
Mining methods are based on a number of factors and are shaft, infrastructure and orebody specific. They are made by experienced mining engineering professionals, with input from all disciplines.

The mining methods employed at Driefontein are subdivided as follows:
- No. 1 SV Shaft: minimal extraction of previously unmined (white) areas and scattered mining: shaft pillar partial extraction:
- No. 1 T and No. 5 SV Shafts: breast mining with dip pillars: scattered white areas;
- No. 4 SV Shaft: s ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required308482519
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual milling capacity  ......  Subscription required  ......  Subscription required2,880 kt
Tonnes milled  ......  Subscription required  ......  Subscription required1,224 kt906 kt3,143 kt6,042 kt
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Reserves at December 31, 2022:
Average Weighted Resource Cut-off is 700 cm.g/t Au.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven In-Situ (UG) 5.8 Mt Gold 8.4 g/t 1.6 M oz
Probable In-Situ (UG) 5.6 Mt Gold 7.9 g/t 1.4 M oz
Proven & Probable In-Situ (UG) 11.4 Mt Gold 8.1 g/t 3 M oz
Measured In-Situ (UG) 20.7 Mt Gold 11 g/t 7.3 M oz
Indicated In-Situ (UG) 11.7 Mt Gold 9 g/t 3.4 M oz
Measured & Indicated In-Situ (UG) 32.4 Mt Gold 10.2 g/t 10.7 M oz
Inferred In-Situ (UG) 1.3 Mt Gold 4.8 g/t 0.2 M oz
Total Resource In-Situ (UG) 33.7 Mt Gold 10 g/t 10.9 M oz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Total cash costs (sold) Gold USD 961 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,661 / oz†   1,141 / oz†  
All-in costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,661 / oz†   1,148 / oz†  
† Net of By-Product.
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Operating Costs:

Units202220212020201720162015
Total operating costs ($/t milled) ZAR 6,289  3,778  4,091  1,022  937  907  

Financials:

Units2022202120202019201820172016
Sustaining costs M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 228.1   235   218.5  
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,046   1,156   1,052  
Revenue M ZAR  ......  Subscription required  ......  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  ......  Subscription required
After-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -3,522   413   1,745  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -648.3   1,841  
Book Value M ZAR  ......  Subscription required  ......  Subscription required
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Water Supply
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
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 2023
Corporate Presentation 2022
Financial Review 2022
Integrated Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... 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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