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South Africa
Evander Mine (Evander Operation)

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 Location:
32 km S from Bethal, South Africa

  Address:
Farm Winkelhaak, Rotterdam Road
Private Bag X1012
Evander
South Africa
2280
Phone  ...  Subscription required
Fax+27-17-632-4046
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
  • Pillar mining
  • Breast mining
Production Start...
Mine Life14 years (as of Jan 1, 2022)
Although large-scale underground operations ceased at Evander Mines in 2018 as a result of the low gold price and high cost of production, the high-grade but variable characteristic of the Kimberley Reef has enabled Evander Mines to continue small-scale ‘selective mining’ in the localized high-grade lower-cost section. This is illustrated by the mining currently being conducted successfully at the Evander 8 Shaft pillar.


Owners

Source: p. 70,96-97
CompanyInterestOwnership
Employee Share Ownership Plan (the ‘ESOP’) 5 % Indirect
Pan African Resources plc 95 % Indirect
Employees own 5% of the issued share capital Evander Mine through an ESOP.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Conglomerate hosted


Summary:

Evander Mines exploits the Kimberley Reef in the Evander basin, the eastern-most extremity of the Witwatersrand Supergroup. The Kimberley Reef is mined throughout the major gold mining districts within the Witwatersrand Supergroup, including the East Rand, Central Rand, West Rand, Far West Rand and Free State goldfields. Deposition models for gold within the conglomeratic horizons follows a palaeo-placer-type sedimentological deposition along with winnowing, erosion and concentration of gold-bearing footwall lithologies. Various studies have highlighted the importance of hydrothermal activity for deposition, remobilisation and enrichment within certain packages of the Witwatersrand Supergroup. The Kimberley Reef is an oligomictic, pebbly conglomerate and comprises a composite sequence of channel sediments that define longitudinal gravel bars and sand bars with pebbly veneers. The reef in the area strikes in an east-west direction and dips to the north at about 10 degrees. The area is also divided by two major normal faults, striking in an east-north-east to west-south-west direction. The reef thickness varies from a waste on contact up to a 50cm well-developed oligomictic conglomerate. Average reef thickness is 35cm within the 8 Shaft vicinity. High gold values in the Kimberley Reef are mostly located at the base of the unit and are associated with the presence of carbon and some visible gold on the footwall contact. Palaeo-placer and braided stream-type sedimentary deposit ........


Mining Methods

  • Pillar mining
  • Breast mining


Summary:

An underground complex consisting of vertical and decline shaft systems. Gold-bearing reef is mined from the 8 Shaft pillar, approximately 1.6km below surface and from 24 Level, some 2.4km below surface. Ore is transported through the decline shaft systems to 15 Level. From there, the ore is transported across to Evander Mines’ 7 Shaft (7 Shaft), where it is hoisted and conveyed to the Kinross metallurgical plant. In 2022 Life-of-mine 14 years (2021: 5 years) due to the addition of 25 and 26 Level mining areas. The 8 Shaft pillar mining, however, only covers approximately 0.3km2 of the total 8 Shaft area. During 2022, mining occurred in the 2 Decline area on the western side at a depth of 2,300m to 2,500m below surface as well as at the 8 Shaft pillar at a depth of 1,600m below surface. All underground mining development and infrastructure placement for the mining of 24 Level progressed according to plan. Furthermore, environmental engineering contractor Bluhm Burton Engineering Projects progressed with the construction of the underground refrigeration plant within the mined excavation area created on 24 Level during 2022. Commissioning of phase 1 of this refrigeration plant is expected during the first quarter of the 2023 financial year while that of phase 2 is expected in quarter four. Phase 1 of the project will enable mining of both the 24 Level F line stopes and mining of the 24 Level B, C and D raise lines. Phase 2 will allow for additional mining crews to be placed ........


Crushing and Grinding
Flow Sheet: Source

The Evander Gold Plant treats ore from Evander No. 8 Shaft and old tailings etc. There are six SAG mills operating in closed circuit with a hydro cyclone. A portion of the cyclone underflow is directed to Knelson centrifugal concentrators for the recovery of free gold. The milled product is nominally 80% passing 75 microns. The mill section is noncyanide exposed as it utilises non contaminated underground water for dilution and gland service water.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required48,56545,30473,496
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required63,971 t
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required40 koz of gold metal in doré95 koz of gold metal in doré95 koz of gold metal in doré
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required63,971 t272,124 t260,784 t
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required138,000 t480,000 t480,000 t
Subscription required - Subscription is required.

Reserves at June 30, 2022:
Estimated Mineral Resources are reported at cut-off values are calculated at 660cmg/t.

Mineral Reserves are reported at cut-off values are calculated at 8.57 g/t (1,029cmg/t).

CategoryTonnage CommodityGradeContained Metal
Proven 1.07 Mt Gold 7.78 g/t 0.27 M oz
Probable 2.24 Mt Gold 6.93 g/t 0.5 M oz
Proven & Probable 3.31 Mt Gold 7.2 g/t 0.77 M oz
Measured 3.84 Mt Gold 12.67 g/t 1.56 M oz
Indicated 1.31 Mt Gold 10.88 g/t 0.46 M oz
Measured & Indicated 5.15 Mt Gold 12.22 g/t 2.02 M oz
Inferred 19.22 Mt Gold 9.8 g/t 6.06 M oz
Total Resource 24.37 Mt Gold 10.31 g/t 8.08 M oz

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,682 / oz   1,679 / oz   954 / oz  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 2,065 / oz†   2,094 / oz†   1,129 / oz†  
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 2,331 / oz†   2,197 / oz†   1,135 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20222021202020192018201720162015
Total operating costs ($/t milled) ZAR 5,9535,6426,0996,5923,8593,9642,4921,450

Financials:

Units2022202120202019201820172016
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 181.5   222.2   153.8  
Revenue M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 811.4   754.9   1,233  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -270   -334   204.3  
Subscription required - Subscription is required



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 30, 2022
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 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
Annual Review 2022
Integrated Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Annual Report 2016
Other 2016
Annual Report 2015
Year-end Mineral Reserves 2013
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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