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South Africa
Tshepong Operation

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 Location:
1.5 km E from Odendaalsrus, South Africa

  Address:
4PM6+MW, Free State
Odendaalsrus
South Africa
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  • Overview
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Undercut mining
  • Sequential grid mining
  • Open stoping
  • Breast stoping with strike pillars
Production Start...
Mine Life8 years (as of Jan 1, 2022)
The Tshepong Operations comprise two operating underground gold mines namely, Tshepong and Phakisa.

Tshepong Operations will be restructured in FY23 and reported as Tshepong North and Tshepong South.


Owners

Source: p. 103
CompanyInterestOwnership
Harmony Gold Mining Company Ltd. (operator) 100 % Indirect
Tshepong Operations is wholly-owned and operated by Harmony.

Contractors

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Deposit Type

  • Conglomerate hosted


Summary:

The Tshepong Operations are situated in the Free State Goldfield, on the southwestern margin of the Witwatersrand Basin of South Africa, one of the most prominent gold provinces in the world. The major gold bearing conglomerate reefs are mostly confined to the Central Rand Group (CRG) of the Witwatersrand Supergroup.

Tshepong Operations exploited primarily the Basal Reef, which occurs within the Harmony Formation of the Johannesburg Subgroup of the CRG.

Mineralisation also occurs within the stratigraphically higher A and B Reefs of the Kimberley (formerly Aandenk) Formation, within the Turffontein subgroup of the CRG. However, only the B Reef can be economically extracted.

Mineralisation is associated with the presence of medium to coarse, clast-supported oligomictic pebble horizons. The presence of allogenic pyrite and detrital carbon is also common.

The principal gold-bearing ore body at the Tshepong and Phakisa sections is the stratiform and stratabound Basal Reef (known as the Basal Reef Zone or BRZ). This unit comprises a thin conglomerate at the base of the BRZ, overlain by clean ‘placer’ quartzites. The BRZ is underlain by a thick series of siliceous and argillaceous quartzites comprising the Welkom Formation and is overlain by shales and quartzites of the Harmony Formation, both of the Johannesburg sub-Group of the Central Rand Group. Although not apparent within the Mines Lease, the BRZ sits unconformably on the Welkom Form ........


Mining Methods

  • Undercut mining
  • Sequential grid mining
  • Open stoping
  • Breast stoping with strike pillars


Summary:

The Tshepong Operations comprise two operating underground gold mines namely, Tshepong and Phakisa. Tshepong is a mature, moderate to deep-level underground operation that uses conventional undercut mining, to depths of 2,400m BMD. Phakisa, younger than Tshepong, is a moderate to deep-level underground operation using conventional underground mining methods to depths of 2,427m BMD. The mines utilise the Tshepong, Phakisa and Nyala shafts. The Tshepong Operations may be classified as moderate to deep level underground gold mines currently operating at depths of up to 2,427m below surface (Phakisa) and 2,161m below surface (Tshepong). Sequential grid mining (SGM) is the preferred mining method used at the Tshepong Operations. This method makes use of dip pillars and reduced mining spans with pre-developed tunnels, aimed at further control of stresses experienced in rock movement. The SGM sequence is a V-shaped configuration, colloquially referred to as the “inverted Christmas tree". While Tshepong Operations business plan is based primarily on the SGM methodology and sequencing, there are sections of the mine that are operating using the breast, undercut and open stoping mining methods. Minor amounts of the B Reef that do not exceed 30% of the on-reef mined per annum, are extracted as an open stoping mining operation. Reason for mining at open stoping is as a result of the erratic nature of the channel width and the support design specific to B reef mining. The Phakisa Min ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits2022202120202019201820172016
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required302,026283,827289,968
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
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Operational Metrics:

Metrics202220212020201920182017
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required1,612 kt1,716 kt1,695 kt
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Reserves at June 30, 2022:
Tshepong operations 2022 cut-off 727 cmg/t.

CategoryTonnage CommodityGradeContained Metal
Proven 7.9 Mt Gold 6.02 g/t 1,532 koz
Probable 0.5 Mt Gold 7.24 g/t 119 koz
Proven & Probable 8.4 Mt Gold 6.09 g/t 1,652 koz
Measured 23.4 Mt Gold 11.79 g/t 8,890 koz
Indicated 11.6 Mt Gold 10.94 g/t 4,097 koz
Inferred 36.9 Mt Gold 10.62 g/t 12,602 koz
Total Resource 72 Mt Gold 11.05 g/t 25,589 koz

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 987 / oz   953 / oz   767 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,245 / oz   1,161 / oz   939 / oz  
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Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M ZAR  ......  Subscription required
Capital expenditures M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 78  USD 52  USD
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 419  USD 372  USD
Gross profit M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 123  USD 102  USD
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Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 27, 2022
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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

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... 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
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Form 20-F 2017
Integrated Report 2017
Other 2017
Other 2017
Year-end Mineral Reserves 2017
Year-end Mineral Reserves 2017
Year-end Mineral Reserves 2017
Integrated Report 2016
Year-end Mineral Reserves 2016
Other 2015
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