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Canada
Borden Mine (Porcupine Operation)

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 Location:
10 km NE from Chapleau, Ontario, Canada

  Address:
4315 Gold Mine Road
South Porcupine
Ontario, Canada
P0N 1H0
Phone  ...  Subscription required
Fax(705)-235-6551
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Sub-level Retreat
  • Cemented backfill
Production Start...
Mine Life8 years (as of Jan 1, 2018)
The Borden Mine is part of the larger Porcupine complex.

Borden mine is the world’s first all-electric underground mine.


Owners

Source: p. 38
CompanyInterestOwnership
Newmont Corp. 100 % Indirect
Goldcorp Borden Limited (Goldcorp) is currently exploring the Borden Gold Project.

On April 18, 2019, Newmont Mining Corp. and Goldcorp Inc. completed their merger to form Newmont Goldcorp Corp.

Contractors

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Deposit Type

  • Mesothermal


Summary:

Owing to its metamorphic grade, the Borden Gold deposit is markedly different from most known Archean-aged mesothermal gold occurrences. On the basis of visual evidence, which is yet to be supported by detailed petrographic studies, it is believed that the Borden Gold deposit is most closely associated with the disseminated gold sub-class.

The gold mineralization at the Borden Gold deposit occurs as a broad zone of disseminated and fracture-controlled sulphides within a volcano- metasedimentary package of variable composition. The main sulphides are pyrite and pyrrhotite, with the former typically dominating. The mineralization generally consists of low- to moderate-grade gold, with minor silver, and is characterized by a persistent higher-grade core surrounded by a lower-grade envelope. Results to date indicate that the higher-grade core improves in grade towards the southeast where it develops into a High-Grade Zone (HGZ) with average grades typically above 2.5 g/t Au.

The northwest portions of the deposit are characterized by local silicification but lack lithological control and quartz veining; while to the southeast a well-developed hydrothermal system consisting of local quartz flooding and potassic alteration predominates and defines the HGZ. The broad mineralized zone encompasses multiple/variable host rocks, dominated by metasedimentary horizons and subordinate intrusives of acidic to intermediate composition, all of which display feldspathi ........


Mining Methods

  • Sub-level Retreat
  • Cemented backfill


Summary:

Borden mine is the world’s first all-electric underground mine.
Commercial gold production at Borden began in October 2019.
Production rate of 1,750 to 4,000 tpd ore as annual average; to be developed to a depth of about 800 m below surface and accessed by ramp from surface.

Mining method:
- Sub-level retreat
- Cemented rock fill with waste backhaul from PGM for waste requirement.
- 15m longhole retreat – factored 24% dilution
- ~2000tpd ore @ 7gpt to mill using proven production rates
- 5x5m main haulage drifts
- Diesel trucks & tethered (electric) scoops until quick-charge battery alternate is viable.
- Battery electric equipment.

Overall, the best fit for Borden was a fleet comprised of equipment from Sandvik and MacLean.
• Scoops: Sandvik LH 514 E – tethered electric
• Trucks: Sandvik TH 54-0 diesel - with a firm commitment to a 40 T battery truck
• Drills: Sandvik DD 422i
• Bolters: MacLean MEM 975 Scissor Bolter
• Utility Vehicles: MacLean Cassette Carries and Scissor Lift
• Grader: MacLean conversion of a Cat 12 M2 diesel grader.


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits20212020Avg. Annual (Projected)
Gold koz  ......  Subscription required  ......  Subscription required120
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.


Reserves at June 30, 2016:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 4.12 Mt Gold 7.14 g/t 0.95 M oz
Measured & Indicated 3.02 Mt Gold 5.77 g/t 0.56 M oz
Inferred 2.3 Mt Gold 5.49 g/t 0.41 M oz



Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Cassette Truck ....................... Subscription required ....................... Subscription required Oct 2, 2018
Grader ....................... Subscription required Apr 19, 2018
Jumbo ....................... Subscription required ....................... Subscription required Jan 31, 2018
Load-Haul-Dump (LHD) ....................... Subscription required 14 t ....................... Subscription required Sep 13, 2016
Scissor Lift ....................... Subscription required ....................... Subscription required Oct 2, 2018
Truck (boom) ....................... Subscription required ....................... Subscription required Dec 31, 2017
Truck (underground) ....................... Subscription required 42 t ....................... Subscription required Sep 13, 2016
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 19, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Corporate Presentation 2018
Other 2018
Other 2018
Other 2018
Annual Report 2017
Corporate Presentation 2017
Year-end Mineral Reserves 2017
Corporate Presentation 2016
Project Description 2016
Year-end Mineral Reserves 2016
Year-end Mineral Reserves 2015
Technical Report 2014
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