Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2061 |
Elkview produces steelmaking coal which is used to make steel in the Asia-Pacific region and elsewhere. |
Source:
p. 13,45
Teck has a 95% partnership interest in the Elkview Mine Limited Partnership. The remaining 5% is indirectly held equally by Nippon Steel Corporation, a Japanese steel producer, and POSCO, a Korean steel producer, each of which hold a 2.5% interest.
Contractors
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Summary:
The Elkview mine is located within the Crowsnest Coalfield in the Elk Valley. The coal measures are situated within the Upper Jurassic to Lower Cretaceous Kootenay Group sediments.
From earliest to latest, the Kootenay Group includes:
• Morrissey Formation: sandstones; subdivided into the Weary Ridge and Moose Mountain Members; 20–80 m in thickness;
• Mist Mountain Formation: interbedded sandstone, siltstone, mudstone, shale and thin to thick seams of bituminous to semi-anthracite coal; 450–550 m in thickness;
• Elk Formation: interbedded sandstone, siltstone, mudstone, shale and locally thick beds of chert-pebble conglomerate and thin seams of high volatile bituminous coal; 350–450 m in thickness.
The geology within the Elkview Project area dips towards the west at approximately 20º and plunges gradually to the south at about 4–8º.
The Mist Mountain Formation contains approximately 25 coal seams of potential economic interest, consisting of medium to high volatile bituminous coal.
Within the coal measures, there are three structurally separated coalfields, the Elk Valley, Crowsnest, and Flathead coalfields. Elkview is situated on the northern end of the Crowsnest coalfield. The Crowsnest coalfield is bounded by the west-dipping Erickson normal fault on the east and the Bourgeau thrust fault on the west.
The major structure in the Project area is a southwest plunging syncline, the Sparwood (Michel) Syncline. Multiple thrust faults and normal faults occur throughout th ........
Summary:
The mining operations use conventional truck-and-shovel methods. As a result of delivery requirements and varying coal seam qualities it is necessary to have multiple coal seams exposed at any time.
EVO currently produces coal from three active pit phases (Baldy Ridge BR6, Baldy Ridge BR2 and Natal Phase NP2) using open-pit coal mining methods, with primary waste stripping and coal mining completed by shovels and rear dump haul trucks. Additional permitted (Baldy Ridge BR3, Baldy Ridge BR4, Baldy Ridge BR5, Baldy Ridge BR7, Adit Ridge AR) and unpermitted (Adit Ridge, Natal Phase NP2, Natal Phase NP3) phases are planned.
The pit designs employ a combination of highwall and re-handle slopes, with a shallow dipping footwall at pit bottom. The design bench face angle is 70°. Highwall slopes are single (15 m) or double-benched (30 m) with inter-ramp angles (IRA) ranging from 34° to 52°. A specific interramp angle IRA is recommended for each wall based on a geotechnical assessment of its credible failure mechanism. Rehandle slopes are single benched (15 m) with a design IRA of 34°. Footwall slopes are typically around 15° and left un-benched.
Waste dumps are built in bottom-up and top-down configurations. The overall slope varies between 26° and 37° (angle of repose) depending on the area of the mine and its reclamation requirements; for example, in- pit backfills versus ex-pit.
The Lerchs–Grossmann (LG) analysis of the block model provi ........
Source:
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Flow Sheet:
Summary:
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Production:
| Commodity | Units | 2022 | 2021 | 2020 | 2018 | 2017 | 2016 |
|
Coal (metallurgical)
|
Mt
| ...... | ...... | ...... | 7 | 6.2 | 7.1 |
All production numbers are expressed as clean coal.
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Operational Metrics:
| Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|
Annual production capacity
| ...... | ...... | 9 Mt of clean coal | 7.4 Mt of clean coal | 7 Mt of clean coal | 7 Mt of clean coal |
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Reserves at December 31, 2022:
The Coal Reserves are reported using the following assumptions: average selling price of US$145/t, average mining and processing costs of $98.01/t , average general and administrative cost of $13.42/t, average other costs of $5.27/t, breakeven strip ratio of 14, minimum mineable seam thickness of 1.00 m; minimum removable parting thickness of 0.50 m; dilution thickness between 0.0 m and 0.2 m; coal loss thickness between 0.2 m and 0.5 m; rock dilution ash of 68%; rock dilution specific gravity of 2.22;. Geotechnical assumptions use pit slope angles that range from 38–52º (overall highwall angles).
The Coal Resources are reported using the following assumptions: average selling price of US$145/t, waste mining cost of $4.06/bcm, coal mining cost of $6.06/bcm; processing cost of $12.44/t, general and administrative cost of $13.42/t, other costs of $62.64/t, and break-even strip ratio of 14 bcmw/mtrc. For Coal Resource estimation, a generalized pit slope angle of 45º is assumed.
| Category | Tonnage | Commodity | Marketable Coal |
|
Proven
|
kt
|
Coal (metallurgical)
|
15,298 kt
|
|
Probable
|
kt
|
Coal (metallurgical)
|
243,182 kt
|
|
Proven & Probable
|
kt
|
Coal (metallurgical)
|
258,481 kt
|
|
Measured
|
273,320 kt
|
Coal (metallurgical)
|
|
|
Indicated
|
155,726 kt
|
Coal (metallurgical)
|
|
|
Measured & Indicated
|
429,046 kt
|
Coal (metallurgical)
|
|
|
Inferred
|
249,788 kt
|
Coal (metallurgical)
|
|
Financials:
| | Units | 2023 | 2020 |
|
Capital expenditures (planned)
|
M CAD
| ...... | |
|
Capital expenditures
|
M CAD
| | ...... |
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Source:
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Corporate Filings & Presentations:
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