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South Africa
Modikwa Mine

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 Location:
107 km SE from Polokwane, South Africa

  Address:
ARM house 29 Impala Road Chislehurston Sandton
Johannesburg
South Africa
2196
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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
  • Platinum
  • Palladium
  • Rhodium
  • Ruthenium
  • Iridium
  • Nickel
  • Copper
  • Chrome
Mining Method
  • Breast stoping with strike pillars
  • Bord-and-pillar
Production Start...
Mine Life2044
Both the UG2 and Merensky reefs are present at Modikwa Platinum Mine (MPM). The MPM consists of underground workings with three decline shafts and a concentrator plant.

During 2023F, trial mining commenced at Merensky Reef.


Owners

Source: p. 31,35
CompanyInterestOwnership
African Rainbow Minerals Ltd. 41.5 % Indirect
Anglo American plc. 50 % Indirect
Ownership Tree
50:50 JV agreement was signed between Rustenburg Platinum Mines and African Rainbow Mining (ARM) Consortium Limited. ARM’s effective stake in Modikwa is 41.5%, through its 83% ownership of the ARM Mining Consortium. The other 8.5% is held by the Mampudima and Matimatjatji community companies through their 17% shareholding in the ARM Mining Consortium.

Jointly managed by ARM and Anglo American Platinum.

Contractors

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Deposit Type

  • Magmatic
  • Pegmatite


Summary:

The Bushveld layered sequence around Modikwa strikes north-northwest to south-southeast and dips to the south-west at 10º to 12º, with local variations in the dip resulting in gradients of nearly 20º. There are several instances where some gentle “rolling” of the reef horizons have been recorded, and normally steeper dips are noted nearer the outcrop (as opposed to at depth).

The outcrop positions of the Merensky Reef and the UG2 Reef normally occur within the areas of low relief, and much of the outcrop is masked by extensive development of black turf as well as, in places, transported sediments. On the farms Maandagshoek 254 KT, Onverwacht 292 KT and Winterveld 293 KT; however, the UG2 Reef (and occasionally the Merensky Reef) outcrops in a series of elongated hills. Although frequently covered with scree material, much of this outcrop has been marked by a series of trenches and pits, many of which date from early pioneer prospecting.

Both the UG2 and Merensky reefs are present at Modikwa. The UG2 Reef occurs as a chromitite layer with an average thickness of approximately 60 centimetres. Three leader chromitites occur above the main seam. Gentle undulations of the UG2 Reef with amplitudes of less than 2 metres are developed across the mine area. Potholes are randomly distributed within the North shaft area but are less abundant in the South shaft area. The Onverwacht Hill area in the southern portion of the mine is characterised by the presence of sev ........


Mining Methods

  • Breast stoping with strike pillars
  • Bord-and-pillar


Summary:

Modikwa Platinum Mine (MPM) is a hybrid operation using conventional breast stoping with strike pillars, supported by trackless development and ore clearance.

MPM has five operational shafts which are North 1 Shaft decline, South 1 and South 2 Shaft declines, Onverwacht Hill adits and the Merensky adit; as well as South 2 Shaft decline which is under construction. The ore is transported from the shafts to the primary crusher and plant via conveyors and trucks from south 2 Shaft.

Mining consists of mechanised development and conventional stoping. The UG2 Reef is accessed via three primary declines from the surface and Merensky Shaft.

Ore from South 2 Shaft will be transferred underground to Onverwacht Hill shaft and then on surface to South 1 Shaft via a new conveyor.

Eventually all underground workings will be connected.

North 1 shaft
Access to North 1 shaft is by means of inclined twin declines. The twin declines are used as follows:
• One decline is fitted with a conveyor for the removal of ore and waste rock from the underground workings and for man access at the beginning and end of each shift;
• One decline is fitted with a trackless delivery system for the transportation of materials underground; and
• A chairlift adjacent to the decline transporting materials underground.

MPM used an old abandoned shaft, used for chrome mining in the past, approximately 1.5Km NorthWest of North Sha ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits2023202220212020201920182017
6E (Pt,Pd,Rh,Au,Ir,Ru) Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required333,888301,228
Chrome Concentrate kt  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Platinum Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Palladium Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Rhodium Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Ruthenium Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Iridium Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Nickel Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202320222021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1.91 Mt2.06 Mt2.06 Mt
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required1.94 Mt2.29 Mt2.43 Mt
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Reserves at June 30, 2023:
Mineral Reserve cut-off grade: 2.76 g/t (4E).

CategoryTonnage CommodityGradeContained Metal
Proven 10.56 Mt 4E (Pt, Pd, Rh, Au) 4.47 g/t 1.52 M oz
Probable 27.98 Mt 4E (Pt, Pd, Rh, Au) 4.15 g/t 3.73 M oz
Proven & Probable 38.54 Mt 4E (Pt, Pd, Rh, Au) 4.23 g/t 5.25 M oz
Measured 96.98 Mt 4E (Pt, Pd, Rh, Au) 5.4 g/t 16.84 M oz
Indicated 153.52 Mt 4E (Pt, Pd, Rh, Au) 4.88 g/t 24.11 M oz
Measured & Indicated 250.52 Mt 4E (Pt, Pd, Rh, Au) 5.08 g/t 40.95 M oz
Inferred 206.55 Mt 4E (Pt, Pd, Rh, Au) 4.1 g/t 27.24 M oz

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Cash costs 6E (Pt,Pd,Rh,Au,Ir,Ru) ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 9,197 / oz   8,463 / oz  
Cash costs Platinum ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 23,311 / oz   21,878 / oz  
Subscription required - Subscription is required.

Operating Costs:

Units20222021202020192018201720162015
Total operating costs ($/t milled) ZAR 1,801  1,757  1,598  1,345  1,265  1,265  1,182  1,187  

Financials:

Units2023202220212020201920182017
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 266   262  
Revenue M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,592   2,513  
After-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 158  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 488  
Operating Cash Flow M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 298  
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Water Supply
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2023
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
Integrated Report 2023
Year-end Mineral Reserves 2023
Integrated Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Environmental Assessment 2018
Annual Report 2017
Annual Report 2017
Year-end Mineral Reserves 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Annual Report 2016
Financial Review 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Integrated Report 2015
Year-end Mineral Reserves 2015
Other 2007
Other 2000
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