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Canada
CST Coal No.8 Mine (Grande Cache) Mine

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 Location:
17 km N from Grande Cache, Alberta, Canada

  Address:
Suite 500, 800 - 5th Avenue SW
Calgary
Alberta, Canada
T2P 3T6
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Sales
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Coal (metallurgical)
Mining Method
  • Truck & Shovel / Loader
Production Start...
CST Coal Canada Limited (CST Coal) commenced mining in the West Extension pit phase of No.8 Mine in July of 2018 and mined this area in 2 periods from 2018 to May, 2020, and from November 2021 to now.

There are three underground resource areas (No.9, No.12 South B2 and No.12 South A, and five open pit resource areas (No.8 Mine, No.2 Surface, No.9 Surface, No.12 North Surface and No.16 Surface), within the CST Coal Property boundary.

The entire No.8 Mine reserve area is covered by a Mine Permit.


Owners

Source: p. 5,10
CompanyInterestOwnership
CST Group Ltd. 88 % Indirect
CST Group Limited (“CST”), via its indirect non-wholly owned subsidiary CST Canada Coal Limited (“CST Coal”), completed on 18 July 2018 the acquisition of the mining assets of Grande Cache Coal LP. CST holds 88% interest in CST Coal.

The mineral tenure of the Coal Reserves is 100% held by CST Coal.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The coal resources and coal reserves reported herein are located in the western foothills of Alberta where a stratigraphic sequence of approximately 150 m of Lower Cretaceous non-marine clastic sediments contain seven coal seams ranging in thickness from 7 metres to 1.5 metres. The Company coal leases are within a larger area of economic coal measures known as the Smoky River Coalfield. The deposit is extensively deformed by the compressive tectonics of the Laramide Orogeny, with thrust faulting and folding creating thickened coal zones up to 5 times the stratigraphic thickness of the seams. Fault throw is up to 2000 m, and fold amplitudes are up to 1500 m. Dips range from flat to vertical, with the limbs of major folds being generally deformed by smaller scale parasitic folding and imbricate small scale thrust faulting. Surface resources areas are found within the most severely structured zones, where thickening of the coal seams under compressive tectonic forces is extensive. Underground resource areas are found is less structured areas where flat bottomed synclines, or gentle anticlines with limb dips of less than 25 degrees, lie between the more structured zones. These zones of gently dipping coal measures can be up to 2 km in width and in general do not show extensive structural thickening of the coal seams. Coal quality of the various coal resource areas is well understood from an extensive database of exploration core sampling, exploration adits, and by sampling of ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

CST Coal Canada Limited (CST Coal) commenced mining in the West Extension pit phase of No. 8 Mine in July of 2018 and mined this area in 2 periods from 2018 to until May, 2020, and from November 2021 to now. A Coal Resource and Coal Reserve Statement was completed in-house by CST Coal effective to March 31, 2022, and issued July 12, 2022. With the exception of No. 8 Mine, the 2022 reserve statement is unchanged from a reserve statement covering the CST Coal property prepared by an independent consulting firm, effective December 31, 2017.

During the period since the last reserve statement, the mining operation operated for 12 full months. In this period the mine was not operating at full capacity due to the ramp up in the workforce which was only completed in the first quarter 2023, and the repair of the largest loading unit. The third major excavating units came into operation in July of 2022. Initially in the period there were nine 217 metric tonne haul trucks in the operational fleet. By June 2022 the fleet size had increased to 10 trucks and by October 2022 the fleet size had increased to 12 trucks.

During the period of production since the last reserve and resource statement there were no regulatory impediments to production. An application (Application No. 1942235) to the Alberta Energy Regulator (AER) to modify the pit bottom design and south footwall design of the No. 8 West Extension Syncline pit phase was submitted in late February 2023, and con ........


Crushing and Grinding


Processing

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Summary:

- subscription is required.


Production:
The No.8 Mine was placed in care and maintenance in mid May 2020 until early October 2021.

CommodityUnits20232022202120202019
Coal (metallurgical) Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20232022202120202019
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,912,282 t0.38 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required6 bcm/t9.8 bcm/t
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required11,429,912 bcm
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required1,890,878 t0.36 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Raw coal annual capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Coal washing plant annual capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at March 31, 2023:
Surface mining resources are based on a 20:1 strip ratio cut-off and a 45-pit wall angle.
Underground resource estimated by CST Coal staff. Minimum depth of cover approx. 50 m. Maximum underground extraction angle 30°; 20m buffer from faulting, 50m buffer from high walls.

CategoryOreTypeTonnage CommodityMarketable Coal
Proven In-Situ (OP) 21.4 Mt Coal (metallurgical) 14.6 Mt
Proven In-Situ (UG) 7.1 Mt Coal (metallurgical) 5.4 Mt
Proven Total 28.5 Mt Coal (metallurgical) 20 Mt
Probable In-Situ (OP) 1.2 Mt Coal (metallurgical) 0.8 Mt
Probable In-Situ (UG) 11 Mt Coal (metallurgical) 8 Mt
Probable Total 12.2 Mt Coal (metallurgical) 8.8 Mt
Proven & Probable In-Situ (OP) 22.6 Mt Coal (metallurgical) 15.5 Mt
Proven & Probable In-Situ (UG) 18.1 Mt Coal (metallurgical) 13.4 Mt
Proven & Probable Total 40.7 Mt Coal (metallurgical) 28.8 Mt
Measured In-Situ (OP) 229.6 Mt Coal (metallurgical)
Measured In-Situ (UG) 136.3 Mt Coal (metallurgical)
Measured Total 365.9 Mt Coal (metallurgical)
Indicated In-Situ (OP) 138 Mt Coal (metallurgical)
Indicated In-Situ (UG) 78.3 Mt Coal (metallurgical)
Indicated Total 216.3 Mt Coal (metallurgical)
Inferred In-Situ (OP) 53.1 Mt Coal (metallurgical)
Inferred In-Situ (UG) 23.4 Mt Coal (metallurgical)
Inferred Total 76.5 Mt Coal (metallurgical)
Total Resource In-Situ (OP) 420.7 Mt Coal (metallurgical)
Total Resource In-Situ (UG) 238 Mt Coal (metallurgical)
Total Resource Total 658.7 Mt Coal (metallurgical)

Financials:

Units2023202220212020
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of March 31, 2023:
HME TypeSizeQuantity
Shovel ....................... Subscription required
Truck (haul) 217 t ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 29, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2023
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Annual Report 2023
Sustainability Report 2023
Year-end Mineral Reserves 2023
Annual Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2015
Other 2015
Technical Report 2011
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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