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Burkina Faso
Sanbrado Mine

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 Location:
20 km S from Mogtedo, Burkina Faso

  Regional Office:
Secteur 27, Quartier Ouayalghin, Parcelle 07, Lot 22, Section SL
Ouagadougou
Burkina Faso
06 BP 10772
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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 & Underground
Commodities
  • Gold
Mining Method
  • Longitudinal open stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Transverse open stoping
  • Cemented backfill
Production Start...
Mine Life13 years (as of Jan 1, 2021)


Owners

Source: p. 5,39,52
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
West African Resources Ltd. (operator) 90 % Indirect
West African Resources Limited (the “Company”) and its subsidiaries (the “Group”, “WAF”, or “West African”) is the operator and 90% owner of the Sanbrado Gold Project (Sanbrado) in Burkina Faso. The government of Burkina Faso retains a 10% equity interest in Sanbrado.

Contractors

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Deposit Type

  • Orogenic
  • Vein / narrow vein


Summary:

The majority of gold deposits on the West African Craton are orogenic-style deposits (Robertson and Peters, 2016). Orogenic-style deposits are sited proximal to major accretionary structures within, or at the boundaries of, composite metamorphosed volcanic- plutonic or sedimentary terrains. The majority of orogenic gold deposits occur within rocks that have been metamorphosed to greenschist facies, within a metamorphic pressure-temperature regime broadly corresponding to the brittle-ductile transition (McCuaig and Kerrich, 1998; Moritz, 2000).

The Markoye Fault is interpreted to be the main conduit for the gold mineralisation found at Sanbrado, accommodating large scale fluid migration. Sanbrado hosts shear zone type quartz vein gold mineralisation, similar to that found elsewhere in late Proterozoic Birimian terrains of West Africa. These orogenic type deposits exhibit strong relationships with regional arrays of major shear zones.

The structural environment can be described as brittle-ductile, coincident with a greenschist-amphibolite metamorphic facies. Arrays of transtensional features are apparent within a preferred S2 shear corridor and a strong shear controlled folding component is evident. Gold mineralisation is hosted in the sheared diorite and in the deformed mylonitic metasediment, and there is also a spatial relationship with the contact zones. It appears that the competency contrast caused by more brittle bodies of diorite within zones of mo ........


Mining Methods

  • Longitudinal open stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Transverse open stoping
  • Cemented backfill


Summary:

Open pit mining
Mining occurred at the M1 South, M1 North, M5 South and M5 North open pits during 2021.

The Sanbrado open-pits employ conventional open-pit mining techniques using drill and blast with material movement by hydraulic excavator and trucks. The project scale and selectivity suit the operating mining fleet of 150 t class excavators in a backhoe configuration matched to 90 t class mine haul trucks. The Sanbrado operation is a multi-pit operation with ore being mined from the M5, M1 South, M1 North and M3 pits. All pits are within 2 km of the primary crusher location.

To suit this sized equipment a bench height of 5 m has been adopted. The benches will be excavated on 2 x 2.5 m high flitches, for blasted material this will be 2 x 3 m high flitches when swell is accounted for.

Underground mining
For most of 2020, M1 South underground ore was sourced from development headings with first underground stoping ore mined from panel-1 in late September 2020. Mining from panel-2 commenced in late Q2 2021, which enabled more continuous stope production from two ore panels for the remainder of 2021. Some 3.2 km of development was completed in 2021. At the end of 2021 the decline was 385 metres vertically below surface.

The M1 South underground mine is a decline access mine using diesel powered loaders and trucks; and electric powered drilling equipment. A long hole open stoping method with cemented rock fill is used to min ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits202220212020
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20212020
Total tonnes mined  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required
Stripping / waste ratio  ......  Subscription required  ......  Subscription required
Plant annual capacity  ......  Subscription required  ......  Subscription required
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Reserves at December 31, 2021:
The portion of the resource considered amenable to open cut mining is reported at lower cutoff grade of 0.5g/t Au.
For the underground portion at M1 South the resource has been reported at a lower cutoff grade of 1.5g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 5,600,000 t Gold 2.6 g/t 460,000 oz
Probable 21,000,000 t Gold 1.9 g/t 1,200,000 oz
Proven & Probable 26,000,000 t Gold 2 g/t 1,700,000 oz
Measured 5,700,000 t Gold 2.9 g/t 529,000 oz
Indicated 217,000,000 t Gold 1.1 g/t 7,537,000 oz
Inferred 79,000,000 t Gold 1.4 g/t 3,600,000 oz
Total Resource 302,000,000 t Gold 1.2 g/t 11,600,000 oz

Commodity Production Costs:

CommodityUnits202220212020
All-in sustaining costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
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Financials:

Units20212020
Sustaining costs M AUD  ......  Subscription required  ......  Subscription required
Revenue M AUD  ......  Subscription required  ......  Subscription required
Pre-tax Income M AUD  ......  Subscription required  ......  Subscription required
After-tax Income M AUD  ......  Subscription required  ......  Subscription required
Operating Cash Flow M AUD  ......  Subscription required  ......  Subscription required
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Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Ref. Date
Backhoe & Rock Breaker ....................... Subscription required ....................... Subscription required Proposed Leased Mar 25, 2019
Dozer ....................... Subscription required ....................... Subscription required Existing Leased Jun 10, 2022
Drill (long hole) ....................... Subscription required 76 mm ....................... Subscription required Existing Leased Jun 10, 2022
Drill jumbo (two boom) ....................... Subscription required 102 mm ....................... Subscription required Existing Leased Jun 10, 2022
Excavator ....................... Subscription required Existing Leased Jun 10, 2022
Grader ....................... Subscription required ....................... Subscription required Existing Leased Jun 10, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Mar 25, 2019
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Leased Jun 10, 2022
Load-Haul-Dump (LHD) ....................... Subscription required 17 t ....................... Subscription required Existing Leased Jun 10, 2022
Truck (haul) ....................... Subscription required Existing Leased Jun 10, 2022
Truck (underground) ....................... Subscription required 50 t ....................... Subscription required Existing Leased Jun 10, 2022
Truck (water) ....................... Subscription required ....................... Subscription required Existing Leased Jun 10, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 10, 2022
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Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Feasibility Study Report 2018
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