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Burkina Faso
Karma Mine

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 Location:
13 km E from Ouahigouya, Burkina Faso

  Address:
Gounghin Petit Paris
Ouagadougou
Burkina Faso
01 BP 1324
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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

StatusTemporary Suspension
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life5 years (as of Jan 1, 2021)
Karma mine was closed in June 2022 after a militant attack. Karma halted production because of security risks.


Owners

Source: p. 7
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
Néré Mining 90 % Indirect
On 11 March 2022, Endeavour Mining plc closed the sale of its 90% interest in its non-core Karma mine in Burkina Faso to Néré Mining for a total consideration of up to $25 million plus a 2.5% Net Smelter Return (“NSR”) royalty.

Contractors

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Deposit Type

  • Orogenic
  • Hydrothermal


Summary:

Karma is located in the Paleoproterozoic Baolé-Mossi domain of the West African Craton, specifically in the Birimian supracrustal rocks, which were probably developed upon a juvenile Paleoproterozoic crust (ca. 2.40-2.20 Ga).

Karma is situated in the regionally east-west trending Goren greenstone belt. The geology consists of a folded sequence of greywacke, siltstone, shale in the south-east and clastic, volcaniclastic and mafic volcanic rocks to the north-west. The western margin of the project area presents a broad north-south magnetic lineament that is interpreted as a first-order, crustal scale, sinistral, shear zone named the Ouahigouya Shear Zone (OSZ). The OSZ extends from the south into Boromo Greenstone Belt and branches in the Karma project into a series of north-east trending sub-shears reactivated during the Eburnean Orogeny between 2,130 and 1,980 Ma.

Substantial areas of Karma are covered by lateritic units, dominantly gravels and cuirasse, which form a highly indurated upper part of the lateritic regolith. A few lateritization events have resulted in weathering to depths of up to 120m. Laterites and sand cover limit the extent of bedrock outcrop in the project area and have limited the geological understanding of the region.

Seven mineral deposits at Karma have been defined up to now over the project area, namely, Kao, North Kao, GGII, GGI, Nami, Rambo and Yabonsgo deposits.

The Kao deposit is centered on a metric to ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Karma mine plan consists of multiple open pits which are developed in a sequence, with multiple pits being mined at the same time, to provide the ore feed for the heap leach operations.

The mining method at Karma is conventional open-pit mining using loading and hauling equipment to transport ore from the pit to the ROM pad. Mining is done by three Komatsu PC-1250 excavators and thirteen Komatsu H785 100 t dump trucks. The load and haul fleet are supported by an ancillary fleet including a wheel dozer, four track dozers and two motor graders. After an extensive tender process Karma transitioned to contractor mining in June 2020 when SFTP was awarded the mining contract. The transition included equipment, spare parts and tooling purchase. The majority of the on-site mining workforce was immediately employed by SFTP.

The material mined is primarily free digging, although during certain periods of the LOM, drill and blast activities is required at a relatively low powder factor to blast hard laterite or clay material. Drill and blast activities is carried out by SFTP and explosives are supplied by BME. Explosive used is INNOVEX 100. Emulsion product is pumped down 115mm diameter holes and 10m deep with a sub-drill of 1m. The production drill fleet consists of one DP1500 Sandvik Drill Rig – top hammer, mainly drilling 115mm-127mm diameter holes.

In 2019 the grade control program was modified at North Kao by the implementation of 30m length R ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits202120202019201820172016
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required108,73397,98261,813
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Total tonnes mined  ......  Subscription required  ......  Subscription required19,435 kt16,932 kt15,313 kt8,753 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required3,745 kt4,715 kt3,862 kt1,879 kt
Waste  ......  Subscription required  ......  Subscription required15,690 kt12,217 kt11,450 kt6,874 kt
Tonnes milled  ......  Subscription required  ......  Subscription required4,196 kt4,097 kt3,552 kt2,089 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required4.19 2.59 2.96 3.66
Annual processing capacity  ......  Subscription required  ......  Subscription required4 Mt4 Mt4 Mt4 Mt
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Reserves at December 31, 2020:
Karma cut-off grades vary between 0.3 g/t to 0.5 g/t.

CategoryTonnage CommodityGradeContained Metal
Proven 0.3 Mt Gold 0.4 g/t 4 koz
Probable 5.2 Mt Gold 0.93 g/t 154 koz
Proven & Probable 5.5 Mt Gold 0.9 g/t 158 koz
Measured 0.3 Mt Gold 0.4 g/t 4 koz
Indicated 47.7 Mt Gold 1.24 g/t 1,894 koz
Measured & Indicated 48 Mt Gold 1.23 g/t 1,898 koz
Inferred 16.2 Mt Gold 1.3 g/t 679 koz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 704 / oz   716 / oz   657 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 813 / oz   834 / oz   738 / oz  
Subscription required - Subscription is required.

Operating Costs:

Units202120202019201820172016
OP mining costs ($/t mined) USD 2.182.322.272.271.821.32
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 3.4   3.8   0.4  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 113.1   98.6   29.8  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -38.1   -3.7   -0.8  
Pre-tax Income M USD  ......  Subscription required -41.4   -5.6   -2.2  
After-tax Income M USD  ......  Subscription required -41.1   -4.6   -9.8  
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2020:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer (crawler) ....................... Subscription required ....................... Subscription required Leased
Dozer (rubber tire) ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Truck (dump) ....................... Subscription required 100 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

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

EmployeesTotal WorkforceYear
Subscription required 2022
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... 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
Corporate Presentation 2018
Management Discussion & Analysis 2018
Press Release 2018
Corporate Presentation 2017
Corporate Presentation 2017
Financial Review 2016
Management Discussion & Analysis 2016
Feasibility Study Report 2014
Other 2013
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Subscription required - Subscription is required.

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