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Mauritania
Tasiast Mine

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 Location:
280 km N from Nouakchott, Mauritania

  Address:
Inchiri Region, 300km NE of Nouakchott via highway N1
Mauritania
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Fax+222-45293895
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...
Mine Life2033


Owners

Source: p. 51
CompanyInterestOwnership
Kinross Gold Corp. 100 % Indirect
Tasiast Mauritanie Limited S.A. (operator) 100 % Direct
The Tasiast mine is owned and operated by Tasiast Mauritanie Limited S.A. (TMLSA), a wholly owned subsidiary of Kinross.

Contractors

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Deposit Type

  • Orogenic
  • Vein / narrow vein


Summary:

Tasiast gold deposits are hosted in Archaean volcanic-sedimentary sequences that have been deformed and metamorphosed to lower amphibolite peak metamorphic grade. Mineralization is both structurally and lithologically controlled, epigenetic in style and was coincident with early stages of post-peak metamorphic retrograde Greenschist P-T conditions.

The Tasiast gold deposits fall into the broad category of orogenic gold deposits. The regional geological setting and deposit features at Tasiast are similar to other wellknown Archaean lode gold deposits hosted along greenstone belts in granitoidgreenstone terranes.

The Tasiast deposits are hosted within a package of strongly foliated and folded rocks in the hanging wall block of an assumed thrust fault or thrust fault system referred to as the Tasiast thrust system. Modelling and interpretation of high-resolution gravity data shows deep geometry suggestive of a thrust system underlying the Aouéouat belt. The Tasiast thrust system displays zones of strong deformation typically 0.5 m to 10 m wide and characterized by laminated foliation with locally preserved mylonitic textures. Hydrothermal alteration assemblages, sulphides and quartz veins are commonly spatially associated with the zones of intense deformation.

All of the Tasiast deposits host an intense, generally N-S striking, variably dipping, penetrative foliation, S1, which is axial planar to tight isoclinal folds in the host sequence (Davis ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Ore and waste rock is mined in 10 metre benches by conventional open pit methods primarily from the West Branch pit. Tasiast currently operates a load and haul fleet of 46 CAT 793D (220 ton) trucks, five Komatsu 785 (92 t) and five CAT 6060 shovels plus two RH340B excavators. Blasting techniques, including presplit and buffer hole blasting, are employed to protect the pit walls.

Ore and waste rock is mined by conventional open pit methods from two pits (West Branch and Piment). Prior mining has taken place in West Branch, Piment and several other smaller pits at Tasiast. From September 2010 when Kinross acquired the property to the end of 2019, a total of 637 million tonnes of material have been mined from various pits, including 53 million tonnes in 2016, 75 million tonnes in 2017, 87 million tonnes in 2018 and 85 million tonnes in 2019.

The existing shovel and haul truck fleets will be used for the duration of mining and no replacement of this equipment is anticipated. Equipment life has been projected from actual operating hours, with estimates of future usage based on the mine plan.

Waste rock is used for haul road and tailings dam construction as needed. The existing road network is well developed, and requires continued maintenance. Additional roads will also be required throughout the life of the mine. These roads will be constructed using the current mining and support mining fleets.


Crushing and Grinding
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Processing

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Summary:

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Production:
Gold production in 2021 decreased compared to 2020, due to the temporary suspension of milling operations as a result of the mill fire on June 15, 2021. Milling activities restarted in the fourth quarter of 2021.

CommodityUnits202120202019201820172016
Gold Equivalent oz  ......  Subscription required  ......  Subscription required  ......  Subscription required250,965243,240175,176
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required4,920 kt8,206 kt6,685 kt7,973 kt
Tonnes processed  ......  Subscription required  ......  Subscription required5,226 kt5,692 kt4,101 kt7,227 kt
Daily milling capacity  ......  Subscription required  ......  Subscription required15,000 t12,000 t8,000 t8,000 t
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Reserves at December 31, 2021:
Mineral reserves Cut-off grade is 0.7 g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 48,563 kt Gold 1.3 g/t 1,961 koz
Probable 63,910 kt Gold 2.2 g/t 4,443 koz
Proven & Probable 112,473 kt Gold 1.8 g/t 6,404 koz
Measured 8,466 kt Gold 1 g/t 279 koz
Indicated 61,318 kt Gold 1.2 g/t 2,309 koz
Measured & Indicated 69,784 kt Gold 1.2 g/t 2,588 koz
Inferred 12,678 kt Gold 2.4 g/t 971 koz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs (sold) Gold Equivalent USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 976 / oz   754 / oz   1,061 / oz  
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Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 428.4   379.4   190.9  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 307.8   298.4   208  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -85.9   118.8   -119.9  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -25   184.5   -67.7  
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Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Drill ....................... Subscription required ....................... Subscription required Oct 31, 2019
Drill ....................... Subscription required ....................... Subscription required Oct 31, 2019
Drill ....................... Subscription required ....................... Subscription required Oct 31, 2019
Excavator ....................... Subscription required ....................... Subscription required Oct 10, 2019
Excavator ....................... Subscription required ....................... Subscription required Oct 31, 2019
Loader ....................... Subscription required ....................... Subscription required Oct 31, 2019
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required Oct 31, 2019
Truck (haul) ....................... Subscription required 90 t ....................... Subscription required Oct 31, 2019
Truck (haul) ....................... Subscription required 220 t ....................... Subscription required Oct 31, 2019
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 10, 2022
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Staff:

EmployeesContractorsYear
Subscription required Subscription required 2020
Subscription required 2019

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 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Management Discussion & Analysis 2018
Press Release 2018
Annual Information Form 2017
Financial Review 2017
Management Discussion & Analysis 2017
Press Release 2017
Year-end Mineral Reserves 2017
Annual Information Form 2016
Annual Report 2016
Press Release 2016
Technical Report 2016
Press Release 2015
Annual Report 2014
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