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Canada
Westwood Operation (Fayolle Mine) (Fayolle)

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 Location:
39 km E from Rouyn-Noranda, Quebec, Canada

  Address:
401 Bay Street, Suite 3200
Toronto
Ontario, Canada
M5H 2Y4
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Underhand stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Paste backfill
Production Start...
Mine Life2033
In addition to feed from the Westwood underground mine and the Grand Duc open pit mine, the IAMGOLD is progressing the development of the Fayolle property to provide supplemental feed during the second half of 2023 year.


Owners

Source: p. 63
CompanyInterestOwnership
IAMGOLD Corp. 100 % Indirect
The Westwood mine are held 100% by the IAMGOLD Corp.

Contractors

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Deposit Type

  • VMS
  • Vein / narrow vein
  • Intrusion related
  • Breccia pipe / Stockwork


Summary:

The Westwood underground mine and the Grand Duc open pit are part of the Doyon-Bousquet-LaRonde (“DBL”) mining camp, which is located within the Southern Volcanic Zone of the Abitibi subprovince.

The Westwood mine is located within the limits of the Doyon Division mining property, which covers the Blake River Group (“BRG”) metavolcanic rocks and a part of the metasedimentary Cadillac and Kewagama Groups, which are localized respectively to the south and north of the BRG. The Westwood deposit is hosted in a volcano-plutonic sequence composed of felsic hypabyssal volcanic rocks (Zone 2 corridor), mafic to intermediate volcanic rocks (North Corridor) and intermediate to felsic volcanic rocks (Westwood Corridor), marked by a chlorite-biotite-carbonate-garnet-amphibole distal alteration and a pervasive quartz-muscovite- sericite-pyrite proximal alteration.

All lithologies of the DBL mining camp have been affected by a north-south compression event, which resulted in a subvertical to steeply south dipping homoclinal volcanic sequence with an east-west schistosity. High-strain anastomosing east-west corridors are observed throughout the property, mainly at geological contacts and within intense alteration zones. Outside of these narrow corridors, primary volcanic textures are typically well preserved.

The Westwood deposit mineralization consists of gold-sulphide vein-type mineralization similar to zones 1 and 2 of the former Doyon mine, which is loca ........


Mining Methods

  • Underhand stoping
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Paste backfill


Summary:

Mine operations are scheduled on two 10-hour shifts per day, seven days per week (development and production). Infrastructure allows mining to a depth of 2,000 metres, although mineralization continues at depth.

Underground Mining Methods
Production at Westwood commenced in 2010, and the mine operated continuously until 2020. Following an incident which lead to seismic events and a sizeable ground fall in 2020, production in various areas of the Westwood underground mine were suspended. An exhaustive investigation into the seismic event was required to make improvements to mining practices and obtain the necessary approvals from the Company’s management and local authorities to recommence operations in the suspended areas. In 2021, following the investigation, the Company prioritized an extensive rehabilitation program of the ground support system and a geotechnical drilling campaign. The Westwood mine completed an update to the geotechnical process for analyzing ground conditions, modeling data, assessing risk and updates to both strategic and tactical mitigations for risk reduction. Following completion of the actions identified in the investigation, mining operations were re-authorized in 2022, contingent on the continued application of changes identified. Technical studies to optimize mining methods and to further our understanding of the ore body are ongoing.

The Westwood underground mine has been developed principally as a mechanized mine. Th ........


Crushing and Grinding
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Processing

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Summary:

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Production:
Operating Information for the Westwood Mine Includs the Grand Duc Open Pit and Westwood Underground Operations.

CommodityUnits2023202220212020201920182017
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required129125
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual milling capacity  ......  Subscription required  ......  Subscription required1.1 Mt
Ore tonnes mined  ......  Subscription required  ......  Subscription required928 kt537 kt576 kt518 kt
Tonnes milled  ......  Subscription required  ......  Subscription required932 kt625 kt693 kt624 kt
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Reserves at December 31, 2022:
Westwood (underground) Mineral Reserves have been estimated using a $1300/oz gold price and Mineral Resources have been estimated using a 6.2g/t (Ordinary Kriging) and 7.4g/t (Multiple Indicator Kriging) Au cut-off grade over a minimum width of 2.6 metres, using a $1500/oz gold price. The Grand Duc and Fayolle Mineral Resources and Reserves estimates are included in the Westwood Mineral Resources and Reserves estimates. The Grand Duc Mineral Reserves have been estimated using a gold price of $1350/oz and Mineral Resources have been estimated using a gold price of $1500/oz. The Fayolle Mineral Reserves have been estimated using a gold price of $1500/oz and Mineral Resources have been estimated using a gold price of $1500/oz.

CategoryTonnage CommodityGradeContained Metal
Proven 128 kt Gold 10 g/t 41 koz
Probable 3,254 kt Gold 5.5 g/t 575 koz
Proven & Probable 3,382 kt Gold 5.7 g/t 616 koz
Measured 791 kt Gold 9.3 g/t 236 koz
Indicated 7,675 kt Gold 8.6 g/t 2,117 koz
Inferred 2,702 kt Gold 12.3 g/t 1,072 koz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required 884 / oz   824 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,073 / oz†   972 / oz†  
† Net of By-Product.
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Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 23.5   17.5  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 55.1   61.1  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 160.5   161.5  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.9   4.5  
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Heavy Mobile Equipment as of April 30, 2020:
HME TypeSizeQuantity
Bolter ....................... Subscription required
Deck & Boom Trucks ....................... Subscription required
Drill ....................... Subscription required
Drill (long hole) ....................... Subscription required
Drill jumbo (single boom) ....................... Subscription required
Excavator ....................... Subscription required
Grader ....................... Subscription required
Personnel Carrier ....................... Subscription required
Scissor Lift ....................... Subscription required
Scoop Tram ....................... Subscription required
Shotcreter ....................... Subscription required
Truck (boom) ....................... Subscription required
Truck (haul) 30 t ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Information Form 2022
Corporate Presentation 2022
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Year-end Mineral Reserves 2022
................................... 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 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Management Discussion & Analysis 2018
Press Release 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Management Discussion & Analysis 2017
Fact Sheet 2016
Management Discussion & Analysis 2016
Annual Report 2015
Annual Report 2014
Technical Report 2013
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