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Guinea
Siguiri Mine

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 Location:
23 km NW from Siguiri, Guinea

  Address:
Cite Ex, Chermin de Fer, 2 Etage, Immeuble Boke
Conakry
Guinea
1006
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...


Owners

Source: p. 1
CompanyInterestOwnership
Government of Guinea 15 % Indirect
AngloGold Ashanti Ltd. 85 % Indirect
Societe Ashanti Goldfields de Guinee SA (operator) 100 % Direct
Siguiri in Guinea is 85% owned by AngloGold Ashanti and 15% by the government of Guinea.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Orogenic


Summary:

The Siguiri orebodies are early Proterozoic orogenic quartz-vein hosted deposits located in the Siguiri Basin of West Africa. Generally poorly exposed, the basin sediments have been subject to greenschist facies metamorphism and consist of a well-bedded turbiditic sedimentary sequence, with some brecciated and possibly volcanic members. Mineralisation also occurs as secondary gold in alluvial and colluvial gravels in laterite cover.

Three main sedimentary packages are recognised in the Siguiri district, the Balato, Fatoya and Kintinian formations. The Balato Formation is dominated by centimeter scale alternations of shale-siltstone and greywacke. The overlying Fatoya Formation consists of meter scale beds of greywacke fining towards the west. The Kintinian Formation is a thick package of shale and sandstone with a basal clast-supported conglomerate.

The orebodies are structurally controlled and the area has undergone at least three distinct phases of deformation, with initial N-S compression developing minor folds, the second and largest deformation event is associated with E-W to ENE WSW directed compression leading to N-S structural architecture, and the third event was a NW-SE compression that led to refolding of existing structures.

A deep oxidation (weathering) profile is developed in the region, varying between 50m to 150m. The mineralised saprolite currently provides the main oxide feedstock for the CIP processing plant, although a new ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Siguiri is currently a multi-pit fresh rock and oxide gold mining operation, mined by contract miner, Mota-Engil. The mining method is selective conventional mining using excavators and trucks on 3m high flitches. Three Caterpillar 6020B excavators are the main loading equipment matched with Caterpillar 777G dump trucks. In some deposits, a selective mining unit (SMU) of 10 x 10 x 3m has been defined based on historical grade control, the deposit type, and the mining equipment used to simulate the expected mining dilution and ore losses.


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits2021202020192018201720162015
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required285381305300
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required8.8 Mt10.5 Mt11.6 Mt
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Reserves at December 31, 2021:
Reserves cut-off grades vary from 0.65 g/t Au to 1.20 g/t Au depending on deposit and ore type.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 67.72 Mt Gold 0.75 g/t 1.64 M oz
Total Resource 193.04 Mt Gold 1.03 g/t 6.38 M oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 844 / oz   725 / oz   784 / oz  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (sold) Gold USD 930 / oz   796 / oz   915 / oz  
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Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 96.5   82   58.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 365  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 56  
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Heavy Mobile Equipment as of July 19, 2019:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer 50 t ....................... Subscription required Leased
Drill 75 t ....................... Subscription required Leased
Excavator ....................... Subscription required 230 t ....................... Subscription required Leased
Grader 25 t ....................... Subscription required Leased
Loader (FEL) 100 t ....................... Subscription required Leased
Truck (dump) ....................... Subscription required 100 t ....................... Subscription required Leased
Truck (water) 100 cu. m ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 26, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
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
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... 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 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Fact Sheet 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Other 2016
Other 2016
Press Release 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Year-end Mineral Reserves 2015
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