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Burkina Faso
Boungou Mine

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 Location:
322 km E from Ouagadougou, Burkina Faso

  Regional Office:
Arrondissement 12, Secteur 54, Parcelle 14 Lot 19, Section 281
Ouagadougou
Burkina Faso
11 BP 1196
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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 Life7 years (as of Jan 1, 2021)
Latest NewsEndeavour Achieves Top End of FY-2022 Guidance; Announces H2-2022 Dividend of $100m     January 23, 2023


Owners

Source: p. 22
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
Endeavour Mining plc 90 % Indirect
SEMAFO Boungou S.A. (operator) 100 % Direct
The Boungou License is held by Semafo Boungou SA. Endeavour, indirectly through its subsidiary Semafo (Barbados) Ltd., holds a 90% stake in Semafo Boungou SA. The remaining 10% interest in Semafo Boungou SA is held by the State of Burkina Faso.

Contractors

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Deposit Type

  • Vein / narrow vein


Summary:

The Tawori exploration permit (initially the Boungou exploration permit), which contains the Boungou gold deposit, lies within the Diapaga greenstone belt, a northeast-southwest orientated belt that extends over 250 km in length and over 50 km in width. Endeavour holds four contiguous permits, collectively known as the Tapoa permit group, covering approximately 70 km in strike length along the Diapaga belt.

The stratigraphy at Boungou is relatively simple and quite consistent from hole to hole. The stratigraphy consists of two volcanic flows separated by a volcaniclastic unit. The footwall flow generally progresses upwards from a massive basalt flow to pillowed flows followed by flow breccia and volcaniclastics. The hangingwall is characterized by a medium grained volcanic flow (or sill). All these units are intruded by diorite and/or granodiorite sills, possibly originating from the felsic intrusion located immediately west of the deposit. Late dolerite dykes are also present and appear to be sub-vertical and strike northwest. The Boungou Shear Zone, which hosts the main gold mineralization at Boungou, is located at the contact between the footwall and hangingwall volcanic units, where the volcanic flow top breccias have formed and the volcaniclastics deposited. The contact zone is thought to have served as an area of weakness, focusing the deformation. While the volcaniclastic units are not always present (although the intensity of the alteration can make it dif ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining uses a conventional open-pit mining method, with hydraulic excavators in backhoe configuration to mine both the mineralized zone and waste. The majority of the rock requires blasting and only the softer material located within the top 5m to 10m of the deposit is free digging and loaded directly by hydraulic excavators.

Mine production was halted on November 6, 2019 due to a security incident on the main route to Boungou. The Boungou Mine was put on care and maintenance for the rest of the year. On February 6, 2020, the Boungou plant was restarted and began processing the stockpile. Open pit mining restarted in July 2020 with a local contractor undertaking load and haul. Full contract mining with SFTP contractors started on October 15, 2020.

Rock mass characterization indicated a very thin Saprolite/Saprock domain (7 m to 15 m thick) underlain by very strong and competent metabasalts and metavolcanic sediments fresh rock mass domain. Structural fabric (joint and bedding) control pit wall stability.

The average annual rainfall at Boungou is 784 mm, with a wet season from June to September. The geology of the pit comprises metabasalts and metavolcanic sediments with a relatively flat mineralized shear zone. Historical records indicate that dewatering rates peak in August (90000 m3 ). Groundwater contribution is in the order of 5000 m3/month (167 m3/day).

Open pit mine production at Boungou averages approximately 3,600 t/d of or ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits20222021202020192018
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required64
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Total tonnes mined  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,628 kt568.3 kt
Waste  ......  Subscription required  ......  Subscription required11,651 kt4,035 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required7.2 7.1
Daily ore mining rate  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required1,000 kt368.1 kt
Daily processing capacity  ......  Subscription required  ......  Subscription required4,000 t4,000 t
Daily mining capacity  ......  Subscription required  ......  Subscription required4,000 t of ore4,000 t of ore
Annual mining capacity  ......  Subscription required  ......  Subscription required1.34 Mt of ore1.34 Mt of ore
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Cut-off grades for the resources are: oxide at 0.91g/t Au, transition at 0.91g/t Au, sulphide at 1.09 g/t Au;
Cut-off grades for the reserves are: oxide: 1.20g/t Au; transitional: 1.30g/t Au; fresh: 1.30g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 0.6 Mt Gold 1.95 g/t 39 koz
Probable 9.3 Mt Gold 3.61 g/t 1,075 koz
Proven & Probable 9.9 Mt Gold 3.51 g/t 1,114 koz
Measured 0.6 Mt Gold 2.04 g/t 40 koz
Indicated 10.5 Mt Gold 3.95 g/t 1,336 koz
Measured & Indicated 11.1 Mt Gold 3.85 g/t 1,376 koz
Inferred 0.1 Mt Gold 4.89 g/t 14 koz

Commodity Production Costs:

CommodityUnits20222021202020192018
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 403 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required 596 / oz  
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operating Costs:

Units2021202020192018
OP mining costs ($/t mined) USD 2.524.78
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units20222021202020192018
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 10.5  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 67  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 22.8  
Subscription required - Subscription is required



Proposed Heavy Mobile Equipment as of March 31, 2016:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Jan 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
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
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Press Release 2018
Annual Information Form 2017
Feasibility Study Report 2016
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News:

NewsDate
Endeavour Achieves Top End of FY-2022 Guidance; Announces H2-2022 Dividend of $100m January 23, 2023

Subscription required - Subscription is required.

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