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Burkina Faso
Wahgnion Mine

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 Location:
73 SW from Banfora, Burkina Faso

  Address:
Avenue Gerard Kango Ouedraogo/Secteur 15
Ouagadougou
Burkina Faso
01 Bp 1334
Phone  ...  Subscription required
Fax+226-2537-4197
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 Life10 years (as of Jan 1, 2021)
Since commercial production was achieved, Wahgnion’s processing plant has performed ~25% above nameplate capacity for throughput and gold recovery.


Owners

Source: p. 64
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
Endeavour Mining plc 90 % Indirect
The Wahgnion Mining License is 90% owned through Endeavour’s Burkinabe subsidiary, Wahgnion Gold Operations SA (“WGO”) (Burkina Faso government owns the remaining 10%).

Contractors

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Deposit Type

  • Hydrothermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

Mineralization at the Wahgnion Gold project is structurally controlled and is widely associated with hematite, iron carbonate, sericite, pyrite and locally, with albitic alteration. Higher gold grades are commonly associated with stylolitic laminated quartz veins or pyrite veinlets. Coarse- grained gold is found in fractures within pyrite veins or in quartz-carbonate vein selvages. Mineralization is predominantly of a lode-style gold type, associated with discrete structures. The mineralization is interpreted to have formed from the same mineralizing system, with variations in style reflecting the difference in local lithological and structural settings.

Nogbele Deposit
Basement exposure in the Nogbele area is generally poor, with outcrop information limited to occasional exposure in shallow creek beds, shallow mining pits, road cuts, and quartz vein outcrop. Surficial regolith varies from a shallow residual granitic profile to a competent laterite ferricrete ridge that traces the contact of the Nogbele pluton and the host rocks in the Nogbele North area.

The Nogbele area is underlain by a package of metamorphosed and variably deformed volcano- sedimentary units and three distinct suites of intrusive rocks. A foliation or lineation is well developed in the oldest of the granitoids and the sedimentary rocks but is absent from the two younger granitoids.

Extensive packages of variably deformed and metamorphosed volcano-sedimentary rocks ar ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Wahgnion Mine is a conventional open pit mine, with several pits of varying sizes. The operations consist of five main regions: Nogbele North, Nogbele South, Fourkoura, Stinger, and Samavogo. Gold mineralization occurs in the laterite, saprolite, transition, and primary weathering horizons. Laterite and saprolite are assumed to be free digging material, whereas transition and primary material will be mined via drill and blast cycles.

Mining is by way of conventional open pit mining techniques using drill and blast as required with material movement by hydraulic excavators and trucks. The mine scale suits 90 tonne class excavators in a backhoe configuration matched to 50 tonne payload class mining haul trucks and 40 tonne payload articulated haul trucks. An extensive RC drill program is conducted to supplement the production blast hole sampling as part of the grade control strategy. WGO own and operate a significant portion of the mining fleet, which has been supplemented by contractor mining utilizing SFTP for the satellite deposits, commencing with Foukoura. Due to the nature of the mineralisation, there are multiple small pits which require careful planning and consideration for aspects such as sequencing (of pits), staging (of cutbacks), waste dump location and potential for backfilling of depleted pits.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019
Total tonnes mined  ......  Subscription required  ......  Subscription required12,151 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,532 kt
Waste  ......  Subscription required  ......  Subscription required10,619 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required6.9
Tonnes processed  ......  Subscription required  ......  Subscription required958 kt
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Reserves at December 31, 2021:
Cut-off grades for the resources are from 0.35g/t Au to 0.60g/t Au;

Cut-off grades for the reserves are oxide: 0.40g/t Au to 0.50g/t Au; transitional: 0.50g/t Au to 0.60g/t Au; fresh: 0.60g/t Au to 0.70g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 2.1 Mt Gold 0.78 g/t 52 koz
Probable 19.5 Mt Gold 1.6 g/t 1,006 koz
Proven & Probable 21.6 Mt Gold 1.52 g/t 1,059 koz
Measured 2.3 Mt Gold 0.82 g/t 60 koz
Indicated 38.4 Mt Gold 1.52 g/t 1,879 koz
Measured & Indicated 40.7 Mt Gold 1.48 g/t 1,940 koz
Inferred 5 Mt Gold 1.53 g/t 247 koz

Commodity Production Costs:

CommodityUnits2022202120202019
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (sold) Gold USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required
^ Guidance / Forecast.
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Operating Costs:

Units202120202019
OP mining costs ($/t mined) USD 2.722.42.17
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required
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Financials:

Units20222021
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required
Revenue M USD  ......  Subscription required
Operating Income M USD  ......  Subscription required
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Proposed Heavy Mobile Equipment as of July 31, 2019:
HME TypeSizeQuantity
Backhoe 5.7 cu. m ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 1, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
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................................... Subscription required 2019
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Annual Information Form 2018
Management Discussion & Analysis 2018
Technical Report 2018
Feasibility Study Report 2017
Management Discussion & Analysis 2017
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Subscription required - Subscription is required.

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