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Canada
Timmins West Mine (Timmins Operation)

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 Location:
17 km SW from Timmins, Ontario, Canada

  Regional Office:
3160 Florence Street
P.O. Box 1067
South Porcupine
Ontario, Canada
P4N 7H9
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
  • Paste backfill
Production Start...
Mine Life6.5 years (as of Jan 1, 2017)
The Timmins West is a part of Timmins operation which is consists of two underground gold mines, the Timmins West mine and the Bell Creek mine, which both feed the Bell Creek mill.

The Timmins West includes three mineralized gold deposits; the Timmins Deposit, Thunder Creek Deposit, and 144 Gap Deposit.


Owners

Source: p. 11
CompanyInterestOwnership
Lake Shore Gold Corp. (operator) 100 % Direct
Pan American Silver Corp. 100 % Indirect
Pan American Silver Corp., through its wholly owned subsidiary, Lake Shore Gold Corporation, owns and operates the Timmins West Mine (“TWM”) in Ontario, Canada.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Metamorphic


Summary:

The setting of the TWM is characteristic of mesothermal Archean shear-hosted gold deposits. Dube and Gosselin (2007) have summarized the general consensus that greenstone-hosted quartz-carbonate vein deposits are related to metamorphism, partial melting, and thermal re-equilibration of subducted volcano-sedimentary terrains. Deep-seated, gold-transporting fluids were channeled to higher crustal levels through major crustal faults or deformation zones, similar to the Destor- Porcupine Fault Zone located about 5km south of the TWM. Enrichment of these mineralizing hydrothermal fluids was likely derived from the leaching of various components, most notably gold, from the volcano-sedimentary country rocks during fluid transport and ascension. The fluids then precipitated as vein material or wallrock replacement in second and third order structures at higher crustal levels through fluid-pressure cycling processes and other physicochemical reactions (temperature, pH, fS2, and fO2 changes).

Gold mineralization in the TWM occurs in steep north-northwest plunging mineralized zones which are also parallel to the local L4 stretching lineation. Mineralization occurs within, or adjacent to zones of strong deformation such as the Holmer and Rusk Shear Zones. Mineralization at the Timmins Deposit is hosted in multiple generations of quartz-carbonate-tourmaline (± albite) veins, associated pyrite alteration envelopes, and disseminated pyrite mineralization. Textural evidence sugge ........


Mining Methods

  • Longhole stoping
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
  • Paste backfill


Summary:

The Timmins West includes three mineralized gold deposits; the Timmins Deposit, Thunder Creek Deposit, and 144 Gap Deposit.

The Timmins Deposit mineral resource extends from near surface (surface is at 10,015m elevation on the mine grid) to approximately 1,525m below surface. There are three main geological mineralized zones; Vein Zone, Footwall Zone, and Ultramafic Zone. Each zone is further comprised of smaller zones, separated by waste rock. The zones vary in transverse width from 1.5m to approximately 30m. Generally, the mineralized domain strikes east-west and dips 55 degrees to the north, although locally individual zones are shallower dipping.

The Thunder Creek mineral resource is approximately 750m south of the Timmins Deposit and extends from 190m to 970m below surface. Thunder Creek consists of the Rusk Zone and the Porphyry Zone and is generally massive, striking east-west and dipping 60 degrees to the north.

The 144 Gap mineral resource is approximately 900m southwest of the Thunder Creek Deposit and extends from 600m to 1,070m below surface with a strike length of approximately 395m. The mineralized domains dip approximately 70 degrees northeast.

The Timmins, Thunder Creek, and 144 Gap Deposit mineral reserves will continue to be extracted using underground mining methods and are accessed via the existing 5.5m diameter shaft and portal/ramp (5m x 5m) from surface.

The primary access to the underground wor ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2020201920182017201620152014
Gold oz  ......  Subscription required  ......  Subscription required87,500119,075114,875139,000142,200
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes milled  ......  Subscription required941,189 t956,267 t1,008,311 t924,506 t1,011,000 t
Daily ore mining rate  ......  Subscription required2,800 t2,600 t
Ore tonnes mined  ......  Subscription required0.7 Mt
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Reserves at June 30, 2021:

CategoryTonnage CommodityGrade
Proven 1.5 Mt Gold 3 g/t
Probable 4.2 Mt Gold 2.9 g/t
Proven & Probable 5.7 Mt Gold 3 g/t
Measured 0.3 Mt Gold 3.7 g/t
Indicated 1 Mt Gold 3.3 g/t
Inferred 0.2 Mt Gold 4.4 g/t

Operating Costs:

Units2017
UG mining costs ($/t milled) USD 57.8
Processing costs ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
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Financials:

Units2017
Capital expenditures M USD 29.5  
Sustaining costs M USD 29.5  



Heavy Mobile Equipment as of June 30, 2021:
HME TypeModelSizeQuantity
Bolter ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required
Excavator ....................... Subscription required
Forklift ....................... Subscription required
Grader ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) 10 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 9 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 6 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 3.5 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 2 cu. yd ....................... Subscription required
Scissor Lift ....................... Subscription required
Truck (boom) ....................... Subscription required
Truck (fuel / lube) ....................... Subscription required
Truck (haul) ....................... Subscription required
Truck (underground) 42 t ....................... Subscription required
Truck (underground) 45 t ....................... Subscription required
Truck (underground) 50 t ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Management Discussion & Analysis 2018
Press Release 2018
Year-end Mineral Reserves 2018
Year-end Mineral Reserves 2018
Annual Information Form 2017
Technical Report 2017
Annual Information Form 2015
Financial Review 2015
Technical Report 2015
Annual Information Form 2014
Technical Report 2014
Annual Information Form 2013
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