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Canada
Holloway Mine (Holt Complex)

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 Location:
52 km E from Matheson, Ontario, Canada

  Address:
Highway 101 East, Box 609
Matheson
Ontario, Canada
P0K 1N0
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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Open stoping
  • Longitudinal retreat
  • Backfill
Production Start...
Holt Mine Complex consists of three mines: The Holt Mine and Mill and the Holloway Mine, and the Taylor Mine located approximately 68 km by road west of the Holt Mill.

The Holt mill, which is currently on care and maintenance, has a capacity of 3,000 tpd and a fully permitted tailings storage facility. The Company plans to evaluate the potential to integrate a number of satellite deposits with the existing infrastructure in the region.

In 2023, Agnico Eagle expects additional expenses of between $35 to $40 million related to site maintenance costs at Hope Bay, the Holt mining complex, and Northern Territory in Australia.


Owners

Source: p. 1
CompanyInterestOwnership
Agnico Eagle Mines Ltd. 100 % Indirect
St Andrew Goldfields Ltd. is a wholly-owned subsidiary of Kirkland Lake Gold Ltd.

Kirkland Lake Gold Ltd owns the Holt Complex, which includes three wholly owned mines, the Taylor mine (“Taylor”), Holt mine (“Holt”) and Holloway mine (“Holloway”), as well as a central milling facility, the Holtmill.

February 8, 2022 – Agnico Eagle Mines Limited and Kirkland Lake Gold Ltd. are pleased to announce the successful completion of the previously announced merger of equals transaction (the “Merger”).

The combined company will continue as Agnico Eagle Mines Limited.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Volcanic hosted
  • Carbonate replacement


Summary:

Regional Geology
The Holloway and Holt mines lie within the Southern Abitibi Greenstone Belt (SAGB) of the Superior Province in north-eastern Ontario. The 40 km long, mostly contiguous HoltHolloway property package is a grouping of strategically located claims straddling the Porcupine-Destor Fault Zone (“PDF”) midway along its 260 km length.

Local Geology
The deformation history of the area is defined by five events. The earliest episode of regional D1 deformation (compression and extension) predated the Porcupine angular unconformity at 2,690 Ma. The D2 event (compression and extension) post-dated the Porcupine assemblage and resulted in localized folding and thrusting and early southside up, dip-slip, ductile deformation on regional deformation zones. Broadly synchronous with the syntectonic opening of the Timiskaming basins in dilatational jogs was D3 folding that resulted in significant left lateral slip movement along the PDF. The D4 folding event created synclines within the Timiskaming assemblage rocks and rightlateral strike-slip displacement along the PDF. The D4-D5 event represents the final stage of transpressional deformation along the PDF. Gold mineralization in the HoltHolloway area is interpreted to be early D3 in age. Lightning Zone replacement mineralization is cut by an inter-mineral dike with an age of 2672 ± 1.9Ma, which is overprinted by a later auriferous quartz-carbonate veining event. The bulk of the gold in the Timm ........


Mining Methods

  • Open stoping
  • Longitudinal retreat
  • Backfill


Summary:

Design Criteria
Mining activities at the Holloway mine are planned to be concentrated in two zones: Smoke Deep, which is located between the Lightning Zone to the west and the Blacktop Zone to the east, and the Lightning/Middle Zone which is the main portion of the mine developed by previous owners.

Smoke Deep
The Smoke Deep Zone extends vertically from 765 m to 865 m and is mostly open at depth and to the east. The zone is accessed via a 1.4 km long ramp from the 730 level at the Lightning Zone. The zone consists of steeply dipping ore and is amenable to long hole stoping mining method.

Ore is transported in the zone via an internal ore pass reporting to a chute on the 845 level. Ore is then transferred by 26 and 30 tonne trucks to the main ore pass on the 730 level in the Lightning Zone. In areas mined below the 845 level, the ore will need to be trucked up to the 845 level and then on to the 730 ore pass. Hauling of waste to the 730 level at the Lightning Zone is minimized by scheduling stopes so that waste can be used as backfill. Smoke Deep is serviced by a single vent raise. It extends from the 845 level to the 505 Blacktop access drift. Fresh air is forced down the main access ramp and up the internal Smoke Deep ramp system. Auxiliary fans feed individual levels from the ramp and the air is exhausted to the 505 level via the internal ventilation raise. Exhaust air splits on the 505 level with approximately half returnin ........


Crushing and Grinding
Flow Sheet: Source


Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits2019201820172016
Gold oz  ......  Subscription required94228728,135
All production numbers are expressed as metal in doré.
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Operational Metrics:

Metrics201620142013
Tonnes milled 204,776 t186,239 t177,006 t

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 257 kt Gold 4.3 g/t 36 koz
Measured & Indicated 1,955 kt Gold 4 g/t 251 koz
Inferred 5,309 kt Gold 4.1 g/t 706 koz

Commodity Production Costs:

CommodityUnits201920172016
Cash costs (sold) Gold USD 1,592 / oz   811 / oz  
Total cash costs (sold) Gold USD
All-in sustaining costs (sold) Gold USD  ......  Subscription required 1,611 / oz   1,086 / oz  

Financials:

Units2016
Capital expenditures M USD 4.3  
Revenue M CAD
Sales margin M CAD


Water Supply
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Heavy Mobile Equipment as of March 13, 2013:
HME TypeModelSizeQuantity
Drill (long hole) ....................... Subscription required
Drill jumbo (single boom) ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required
Forklift ....................... Subscription required
Grader ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required 7 cu. yd ....................... Subscription required
Scissor Lift ....................... Subscription required
Truck (boom) ....................... Subscription required
Truck (dump) 30 t ....................... Subscription required
Truck (underground) ....................... Subscription required 26 t ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 22, 2023
....................... Subscription required ....................... Subscription required Subscription required Apr 19, 2023
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
Management Discussion & Analysis 2018
Management Discussion & Analysis 2017
Corporate Presentation 2016
Corporate Presentation 2016
Financial Review 2016
Management Discussion & Analysis 2016
Technical Report 2016
Annual Report 2014
Technical Report 2013
Technical Report 2012
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Subscription required - Subscription is required.

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