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Canada
Ekati Mine

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 Location:
308 km NE from Yellowknife, Northwest Territories, Canada

  Regional Office:
900 – 606 4 Street SW
Calgary
Alberta, Canada
T2P 1T1
Phone  ...  Subscription required
Fax+1.403.910.1934
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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
  • Sub-level Retreat
Production Start...
Mine Life2028
Ekati mine comprises six open pits (Panda, Koala, Misery, Fox, Koala North, and Beartooth) and three underground operations (Panda, Koala and Koala North).


Owners

Source: p. 15
CompanyInterestOwnership
Arctic Canadian Diamond Company Ltd. (operator) 89.9 % Indirect
89.9% Arctic Canadian Diamond Company Ltd.
11.1% Stewart Blusson.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Kimberlite


Summary:

Bedrock at the Ekati Project is dominated by Archean granitoids, intruded by metagreywackes of the YK Supergroup and transected by Proterozoic mafic dykes. No younger cover sediments are preserved. Bedrock is overlain by Quaternary glacial deposits which are generally less than 5 m thick.

The 45 to 75 Ma kimberlites, part of the Lac de Gras kimberlite field, intrude both the granitoids and metasediments. The kimberlites are mostly small pipe-like bodies (surface area predominantly <3 ha but can reach as much as 20 ha) that typically extend to projected depths of 400–600 m below the current land surface. Kimberlite distribution is controlled by fault zones, fault intersections and dyke swarms.

The kimberlites are made up almost exclusively of volcaniclastic olivine-rich volcaniclastic kimberlite (VK), with lesser mud-rich, resedimented volcaniclastic kimberlite (RVK) and primary volcaniclastic kimberlite (PVK). In rare cases (e.g. Pigeon), pipes are dominated by or include significant proportions of magmatic kimberlite (MK). Economic mineralization is mostly limited to olivine-rich resedimented volcaniclastic and primary volcaniclastic types.

Diamond grades are highly variable. Estimated average grades for kimberlites that have been bulk sampled range from less than 0.05 cpt to more than 4 cpt.


Mining Methods

  • Truck & Shovel / Loader
  • Sub-level Retreat


Summary:

At the Ekati Diamond Mine, miners use two methods to remove the diamond-rich kimberlite ore from the ground: open pit mining and underground mining. In open pit mines, workers remove waste rock and earth to get to the kimberlite pipe using digging equipment and explosives. In underground mines, spiral-shaped tunnels are built to allow mining equipment to drill, blast, dig, and haul the ore from deeper parts of the kimberlite pipes.

The Ekati Diamond Mine plan involves bringing pits and underground mines into production over time:
• Panda, Koala, Koala North, Beartooth, Fox, Lynx, and Misery open pits have all been developed, placed into production, and are now closed.
• Panda, Koala, and Koala North underground mines have all been developed, placed into production, and are now closed.
• Beartooth, Panda, and Koala pits have all become containment facilities for fine processed kimberlite.
• Open pit mining production in Sable and Pigeon pits and underground mining at Misery Underground was ongoing throughout the reporting period. Mining production concluded in Pigeon Pit in April 2022.

Current mining operations are focused on mining ore from Misery Underground and Sable open pit. Production of these ore bodies will continue through 2022. Arctic Canadian will continue to progress the Point Lake project, with fish-out and dewatering of Point Lake scheduled for 2022.

Optimization study of the Jay Project is ongoing.

........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits20172016201520142013
Diamond k carats 5,2083,7323,1581,6771,216
All production numbers are expressed as mineral.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required4,102,545 t5,036 kt4,649 kt
Waste  ......  Subscription required  ......  Subscription required19,507,195 wmt29,023,894 wmt22,427 kt21,586 kt
Tonnes processed  ......  Subscription required  ......  Subscription required4,102,545 t3.6 Mt2,940 kt3,618 kt
Daily processing capacity  ......  Subscription required  ......  Subscription required10,800 t
Subscription required - Subscription is required.

Reserves at January 31, 2017:

CategoryTonnage CommodityGradeContained carats
Probable 68.9 Mt Diamond 1.5 carats/t 105.4 M carats
Indicated 129.1 Mt Diamond 1.1 carats/t 145.9 M carats
Inferred 20.6 Mt Diamond 1 carats/t 19.8 M carats

Commodity Production Costs:

CommodityUnits201720162015
Cash costs Diamond USD 38.8 / carat   86.3 / carat   111.9 / carat  

Operating Costs:

Units201720162015
Total operating costs ($/t milled) USD 67.587.384.5

Financials:

Units20172016
Sustaining costs M USD 36   28  
Capital expenditures M USD 241   196.5  
Operating Income M USD -97   -13.6  
EBITDA M USD 64.9   129.1  



Heavy Mobile Equipment as of July 31, 2016:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Drill ....................... Subscription required ....................... Subscription required Leased
Drill (long hole) ....................... Subscription required ....................... Subscription required Leased
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required 11 cu. m ....................... Subscription required Leased
Excavator ....................... Subscription required 10 cu. m ....................... Subscription required Leased
Excavator ....................... Subscription required 4.4 cu. m ....................... Subscription required Leased
Excavator ....................... Subscription required 4.6 cu. m ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Grader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required 6.4 ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required 9.45 cu. m ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required 17 cu. m ....................... Subscription required Leased
Load-Haul-Dump (LHD) ....................... Subscription required 10.5 t ....................... Subscription required Leased
Load-Haul-Dump (LHD) ....................... Subscription required 8 t ....................... Subscription required Leased
Shovel ....................... Subscription required ....................... Subscription required Leased
Shovel (hydraulic) ....................... Subscription required 12 cu. m ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 90 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 170 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 225 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 80 t ....................... Subscription required Leased
Truck (underground) ....................... Subscription required 28 t ....................... Subscription required Leased
Truck (water) ....................... Subscription required 100 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 3, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Other 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Information Form 2017
Annual Report 2017
Project Description 2017
Annual Report 2016
Technical Report 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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