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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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WebsiteWeb
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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...
Siguiri is currently a multi-pit fresh rock and oxide gold mining operation.


Owners

Source: p. 31
CompanyInterestOwnership
Government of Guinea 15 % Indirect
AngloGold Ashanti Ltd. 85 % Indirect
Société AngloGold Ashanti de Guinée S.A. (operator) 100 % Direct
Société AngloGold Ashanti de Guinee, commonly known as Siguiri gold mine (Siguiri), is a production stage property. It is co- owned by AngloGold Ashanti (85%) and by the government of Guinea (15%).

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Alluvial / Placer
  • Vein / narrow vein


Summary:

Geology Siguiri is situated in the northern part of the Siguiri Basin of Guinea, and is underlain by Lower Proterozoic rocks of the Birimian metasedimentary and volcano-sedimentary formations. Where exposed, the sediments consist of a well-bedded turbiditic sequence of greenschist facies siltstones, sandstones, greywackes and minor conglomerates, with some brecciated and possibly volcanic members. However, stratigraphic relationships in the area are poorly understood due to poor exposure and a thick lateritic duricrust covering large portions of the lease. The Siguiri mineralisation occurs as secondary gold in alluvial or colluvial gravel in lateritic cover and primary vein-hosted mineralisation. The veins are quartz dominant and display various styles and orientations, with a sub-vertical northeast-trending conjugate quartz vein set predominating in most of the open pits, irrespective of the bedding orientation. Auriferous quartz veins show a robust lithological control and are best developed in the sandstone/greywacke units. The primary structural and lithological trend in the current mining area of Block 1 changes from a north-south orientation in the south to a northwest-southeast orientation in the north. The geology of Block 2 differs from Block 1 as it is mainly underlain by metavolcanic and volcanoclastics. However, mineralisation styles appear similar to those in Block 1, with Saraya appearing to be located on a north-south orientated structure. Deposit type Thr ........


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 conventional selective 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. Mining occurs primarily at Kami and Bidini pits in Block 1, as well as Saraya pit in Block 2.


Crushing and Grinding
Source: Subscription required

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Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required285381305
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual processing capacity  ......  Subscription required  ......  Subscription required12 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required2.48 2.07
Total tonnes mined  ......  Subscription required  ......  Subscription required26,447 kt20,508 kt
Tonnes processed  ......  Subscription required  ......  Subscription required9.5 Mt8.8 Mt10.5 Mt11.6 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2022:
Reserves cut-off grades vary from 0.65 g/t Au to 1.10 g/t Au depending on deposit and ore type.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 106.92 Mt Gold 0.8 g/t 2.75 M oz
Total Resource 331.34 Mt Gold 1.02 g/t 10.86 M oz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 844 / oz†   725 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 930 / oz†   796 / oz†  
All-in costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 96.5   82   58.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 365  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 56  
EBIT M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelSizeQuantityLeased or
Contractor
Ref. Date
Dozer 50 t ....................... Subscription required Leased Jul 19, 2019
Drill 75 t ....................... Subscription required Leased Jul 19, 2019
Excavator ....................... Subscription required 230 t ....................... Subscription required Leased Dec 31, 2022
Grader 25 t ....................... Subscription required Leased Jul 19, 2019
Loader (FEL) 100 t ....................... Subscription required Leased Jul 19, 2019
Truck (dump) ....................... Subscription required 100 t ....................... Subscription required Leased Dec 31, 2022
Truck (water) 100 cu. m ....................... Subscription required Leased Jul 19, 2019
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 12, 2023
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 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
Other 2023
Fact Sheet 2022
Financial Review 2022
Form 20-F 2022
Integrated Report 2022
Other 2022
Other 2022
Year-end Mineral Reserves 2022
................................... 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
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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