Overview
Stage | Production |
Mine Type | Open Pit & Underground |
Commodities |
|
Mining Method |
- Truck & Shovel / Loader
- Blast Hole Stoping
|
Production Start | ...  |
Mine Life | 14 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. |
Source:
p. 47
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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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 ........

Flow Sheet:
Flow Sheet:
Summary:

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Production:
Commodity | Units | 2019 | 2018 | 2017 | 2016 |
Diamond
|
k carats
| ...... ^ | 1,324 | 1,643 | 449 |
All production numbers are expressed as mineral.
^ Guidance / Forecast.
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Operational Metrics:
Metrics | 2019 | 2018 | 2017 | 2016 |
Tonnes processed
| 2.4 Mt ^ | 2,328,300 t | 1,956,436 t | 399,162 t |
Ore tonnes mined
| | 2,115,522 t | 2,228,273 t | 2,074,827 t |
Daily milling capacity
| | | 6,000 t | 6,000 t |
Total tonnes mined
| | | 4,475,854 t | 7,840,130 t |
Plant annual capacity
| | | | 2.16 Mt |
^ Guidance / Forecast.
Reserves at December 31, 2018:
Category | OreType | Tonnage | Commodity | Grade | Contained 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:
| Commodity | Units | 2018 | 2017 |
Cash costs
|
Diamond
|
CAD
|
100.4 / carat
|
53.6 / carat
|
Operating Costs:
| Units | 2018 | 2017 |
Total operating costs ($/t milled)
|
CAD
| 57.1 | 45 |
Financials:
| Units | 2019 | 2018 | 2017 |
Capital expenditures (planned)
|
M CAD
| ......  |
|
|
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
|
Corporate Filings & Presentations:
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