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Canada
Renard Mine

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 Location:
493 km N from Saguenay, Quebec, Canada

  Regional Office:
168 Main Street, Suite 103
Mistissini
Quebec, Canada
G0W 1C0
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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
  • Diamond
Mining Method
  • Truck & Shovel / Loader
  • Blast Hole Stoping
Production Start...
Mine Life14 years (as of Jan 1, 2019)
The Renard diamond mine, operated by Stornoway Diamonds Canada Inc. (“Stornoway”), restarted operations in September 2020 following an extended care and maintenance period related to COVID-19.

Stornoway has not published 2019 and 2020 annual reports by the time it was delisted from TSX in September 2019.


Owners

Source: p. 47
CompanyInterestOwnership
Stornoway Diamonds Corp. 100 % Indirect
Stornoway Diamonds Corp. has a 100% interest in the Renard Diamond Mine through its wholly owned subsidiary, Stornoway Diamonds (Canada) Inc. (SDCI).

Since Stornoway went bankrupt, Deloitte was appointed as trustee. Stornoway got delisted from TSX (since September 2019).

Contractors

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Deposit Type

  • Kimberlite


Summary:

The Renard kimberlites were emplaced into granitic and gneissic host rocks, and contain diamonds of economic interest. The bodies comprise a late Neo-Proterozoic to Cambrian kimberlite field in Québec (Girard, 2001; Moorhead et al., 2002; Letendre et al., 2003).

To date, nine kimberlite pipes have been identified over a 2 km2 area in the Renard Cluster (Renard 1 to Renard 10; with Renard 5 and Renard 6 forming one body, referred to as Renard 65). The kimberlite pipes are typically spaced between 50 m and 500 m from each other. Geophysical data and drill information from delineation and bulk sampling programs indicate that, in general, most of the Renard kimberlites are irregular and elliptical in plan view. Surface areas of the kimberlite portion of the pipes range from 0.1 ha to 2.0 ha. Two laterally extensive kimberlite dyke systems, known as the Lynx and Hibou dykes, have been identified to the west and northwest of the pipe cluster, respectively (Figure 7.3). Portions of both dykes are included in the mineral resource estimation. Additional dyke like kimberlites have been discovered elsewhere on the property. These are not included in the mineral resource estimation but may warrant additional work at a later date.


Mining Methods

  • Truck & Shovel / Loader
  • Blast Hole Stoping


Summary:

A mine plan has been developed to extract the Indicated Mineral Resources of the Renard Project. The Renard 2 and Renard 3 kimberlite pipes will be mined through a combination of open pit and underground mining methods, whereas the Renard 65 kimberlite pipe will be mined by open pit mining method only and the Renard 4 pipe will be mined by underground method only. Open pit and underground Mineral Reserves were estimated independently based on criteria specific to each method.

The Renard 2 and Renard 3 open pit excavations result in a single pit at surface with two pit bottoms centered on the respective orebodies. The excavation is therefore treated as a single pit and is referred to as the R2/R3 OP.

The underground mine will be developed while mining the R2/R3 OP, and following its depletion, the underground mine will be extended to surface through the pit floor.

Waste rock from the open pit will be placed into the Renard 2 and Renard 3 underground stopes via the open pit to provide support for the stope walls during mining. Waste Waste material to support the Renard 4 underground stopes will be backfilled through backfill raises from surface.

Four underground mining methods were shortlisted and evaluated, including blasthole shrinkage (BHS), sublevel retreat (SLR), long hole panel mining with backfill (LHP), and blasthole shrinkage with pillars (BHSP). Based on this study, the blasthole shrinkage (BHS) mining method was selected ........


Crushing and Grinding
Flow Sheet: Source


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2019201820172016
Diamond k carats  ......  Subscription required ^1,3241,643449
All production numbers are expressed as mineral. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019201820172016
Tonnes processed 2.4 Mt ^2,328,300 t1,956,436 t399,162 t
Ore tonnes mined 2,115,522 t2,228,273 t2,074,827 t
Total tonnes mined 4,475,854 t7,840,130 t
Daily milling capacity 6,000 t6,000 t
Plant annual capacity 2.16 Mt
^ Guidance / Forecast.

Reserves at December 31, 2018:

CategoryOreTypeTonnage CommodityGradeContained carats
Proven Stockpiles 1,903 kt Diamond 0.269 carats/t 513 carats
Probable In-Situ (OP) 2,609 kt Diamond 0.255 carats/t 665 carats
Probable In-Situ (UG) 21,061 kt Diamond 0.812 carats/t 17,106 carats
Proven & Probable Total 25,074 kt Diamond 0.715 carats/t 18,284 carats

Commodity Production Costs:

CommodityUnits20182017
Cash costs Diamond CAD 100.4 / carat   53.6 / carat  

Operating Costs:

Units20182017
Total operating costs ($/t milled) CAD 57.145

Financials:

Units201920182017
Capital expenditures (planned) M CAD  ......  Subscription required
Capital expenditures M CAD 88.2   126.9  
Revenue M CAD 165.5   196.5  
Gross profit M CAD -61.7   47.3  
Pre-tax Income M CAD -258.1   -143.3  
EBITDA M CAD -7.9   85  
Operating Cash Flow M CAD 7   65.9  



Proposed Heavy Mobile Equipment as of March 30, 2016:
HME TypeModelSizeQuantity
Backhoe ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 27, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Corporate Presentation 2018
Financial Review 2018
Management Discussion & Analysis 2018
Press Release 2018
Corporate Presentation 2017
Financial Review 2017
Management Discussion & Analysis 2017
Press Release 2017
Annual Information Form 2016
Corporate Presentation 2016
Management Discussion & Analysis 2016
Technical Report 2016
Management Discussion & Analysis 2015
Feasibility Study Report 2013
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