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South Africa
Phoenix Mine

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 Location:
57 km SW from Kroonstadt, South Africa

  Regional Office:
Randfontein Office park Corner of Main Reef Road and Ward Avenue
P.O. Box 2
Randfontein
South Africa
1760
Phone  ...  Subscription required
Fax+27-11-692-3879
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeTailings
Commodities
  • Gold
Mining Method
  • Hydraulic mining
Processing
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption
  • Cyanide (reagent)
Mine Life8 years (as of Jan 1, 2020)
The Phoenix project, or the Tswelopele Beneficiation Operation, is a low-cost, high profit-margin low-grade tailings reprocessing operation.


Owners

Source: p. 327
CompanyInterestOwnership
Harmony Gold Mining Company Ltd. 70 % Indirect
On 20 March 2013 Harmony signed transaction and funding agreements to give effect to an empowerment transaction to dispose of 30% of its Free State based Phoenix operation (Phoenix) to BEE shareholders, which includes a free-carry allocation of 5% to a community trust that has been created and is currently controlled by Harmony. The transaction closed on 25 June 2013, following the fulfilment of the last condition precedent. In terms of the agreements Phoenix was transferred to a newly incorporated subsidiary (PhoenixCo) which subsequently changed its name to Tswelopele Beneficiation Operation (TBO).

Deposit Type

  • Tailings


Summary:

The Phoenix operation, located adjacent to Harmony’s current and historical operations in the Free State, involves the retreatment of tailings from tailings storage facilities in the region to extract any residual gold.


Mining Methods

  • Hydraulic mining


Summary:

Hydro-mining on two TSFs, Brand A and Dam 21, for the Phoenix operation and one TSF, FSS5 for the Central Plant retreatment project, is conducted under contract. Material is reclaimed using high-pressure water on the TSF, from where the material is pumped to the Saaiplaas plant in separate rubber-lined pipelines from Brand A and Dam 21, and to Central Plant from FSS5.

The hydro-mining (monitoring) process uses 100mm and 150mm diameter high-pressure water monitors (cannons) to re-pulp the consolidated slimes to a relative density of around 1.4. The re-pulped slime flows under gravity to an in-dam finger screen where large trash is removed and then to the sump from where a transfer pump delivers it to one of two vibrating screens for secondary screening to remove oversize and smaller trash material. The screen underflow falls into the transfer sump. A separate pump station at each reclamation TSF pumps the reclaimed screened pulp via rubber lined pipelines to the plant.


Crushing and Grinding


Processing

  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption
  • Cyanide (reagent)

Source: Subscription required

Summary:

The reclaimed tailings pulp is delivered to the thickener distribution tower at both the Saaiplaas and Central plants where hydrated lime is added to raise the pH to 10.5. The pulp is distributed to the thickeners where the relative density is increased to 1.45 prior to the addition of cyanide for the leaching process.

The thickened pulp is pumped to linear screens with 800µm apertures where any residual trash is removed prior to the addition of cyanide for the leach and adsorption stages in both plants.

Central Plant uses six mechanically agitated leach tanks and eight mechanically agitated carbon-in-pulp tanks with cascade flow between the tanks, while the Saaiplaas plant has two parallel circuits with six air agitated pachuca tanks operated in carousel mode. Two tanks in each circuit are used for leaching and four for the carbon-in-leach process.

The final product of both the Saaiplaas and Central plants is loaded carbon.

Carbon elution fo ........

Recoveries & Grades:

CommodityParameter2020201920182017201620152014
Gold Head Grade, g/t 0.130.120.120.140.120.140.14

Production:

CommodityUnits202020192018201720162015
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required29,51525,84927,875
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required6,465 kt6,245 kt
Subscription required - Subscription is required.

Reserves at June 30, 2020:

CategoryTonnage CommodityGradeContained Metal
Proven 48.7 Mt Gold 0.28 g/t 442 koz
Measured 48.7 Mt Gold 0.28 g/t 442 koz

Commodity Production Costs:

CommodityUnits2020201920182017201620152014
Cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 907 / oz 854 / oz 924 / oz 885 / oz
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 926 / oz 866 / oz 936 / oz 885 / oz
Subscription required - Subscription is required.

Operating Costs:

Units20172016
Processing costs ($/t milled) USD 43

Financials:

Units2020201920182017201620152014
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 4  
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 35  USD 35  USD
Gross profit M  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 8  USD 11  USD
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 26, 2021
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
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
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Form 20-F 2017
Other 2017
Year-end Mineral Reserves 2017
Year-end Mineral Reserves 2017
Year-end Mineral Reserves 2017
Form 20-F 2016
Integrated Report 2016
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Aerial view:

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