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United States
Long Canyon Mine (Nevada Gold Mines Operation)

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 Location:
104 km E from Elko, Nevada, United States

  Regional Office:
1655 Mountain City Highway
Elko
Nevada, United States
89801
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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 TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life8 years (as of Jan 1, 2016)
On July 1, 2019, Long Canyon was contributed to Nevada Gold Mines, a joint venture between Barrick (61.5%) and Newmont (38.5%).

Mining of Phase 1 at Long Canyon is scheduled to be completed early in the second quarter of 2022, with residual production to follow for the remainder of 2022. The focus at Long Canyon is now shifting to permitting Phase 2, which is expected to begin production in 2026.


Owners

Source: p. 72
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. (operator) 61.5 % Indirect
On March 10, 2019, Barrick entered into an implementation agreement with Newmont to create a joint venture, named Nevada Gold Mines.

On July 1, 2019, Long Canyon was contributed to Nevada Gold Mines, a joint venture between Barrick and Newmont.

Nevada Gold Mines include Barrick’s Cortez, Goldstrike, Turquoise Ridge and Goldrush properties and Newmont’s Carlin, Twin Creeks, Phoenix, Long Canyon and Lone Tree properties.

Barrick is the operator of the joint venture and owns 61.5%, with Newmont owning the remaining 38.5% of the joint venture.

Contractors

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Deposit Type

  • Sediment-hosted
  • Carlin-type


Summary:

Long Canyon is a sediment-hosted disseminated gold deposit.

The gold mineralization at Long Canyon is best described as sediment-hosted, Carlin-type gold mineralization.

The mineralization identified at Long Canyon shares many of the characteristics of Carlin-type gold mineralization, including:

• Stratigraphic control on mineralization - mineralization is hosted primarily in limestone, particularly in silty, thin-bedded units;

• Structural control on mineralization - mineralization occurs in karstic cavities, collapse breccias, and anticlinal fold hinges;

• Geochemical association - elevated arsenic, mercury, antimony, and thallium accompany the gold mineralization, while silver and base-metal concentrations are low; and

• Alteration - mineralization is associated with decalcification, silicification/jasperoid, oxidized variants of pyrite and arsenical pyrite or arsenopyrite, and clay alteration.

The Long Canyon project also displays some characteristics that are unlike typical Carlin-type gold deposits. The prevalent association of hematite with gold mineralization at Long Canyon is not a common characteristic among all Carlin-type deposits, although this phenomenon is associated with weathered/oxidized portions of some of the deposits.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Long Canyon Mine includes an open pit with a series of benches from which oxide waste rock and ore is extracted. Mining is conducted using conventional open pit techniques and equipments, including blast-hole drills, hydraulic shovels, front-end loaders, and off-highway haul trucks. Other related mining equipment includes dozers, rubber-tired loaders, motor graders, water trucks and other mobile support equipment.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits202220212020201820172016
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required17017422
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
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Operational Metrics:

Metrics202120202019
Total tonnes mined  ......  Subscription required  ......  Subscription required17,925 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required2,078 kt
Waste  ......  Subscription required  ......  Subscription required15,847 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required7.63
Tonnes processed  ......  Subscription required  ......  Subscription required2,080 kt
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 0.99 Mt Gold 1.18 g/t 0.037 M oz
Measured 0.88 Mt Gold 2.66 g/t 0.075 M oz
Indicated 10.7 Mt Gold 3.87 g/t 1.3 M oz
Inferred 2.6 Mt Gold 3.6 g/t 0.31 M oz

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
Total cash costs (sold) Gold USD 423 / oz†   338 / oz†   186 / oz†  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (sold) Gold USD 505 / oz†   364 / oz†   227 / oz†  
All-in costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units202120202019
OP mining costs ($/t mined) USD 2.421.871.76
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required
G&A ($/t mined) USD  ......  Subscription required
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Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 11   10   119  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 11   3   1  
Pre-tax Income M USD 44   63   -3  
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Heavy Mobile Equipment as of May 5, 2021:
HME TypeModelQuantity
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2022
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Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Form 10-K 2016
Year-end Mineral Reserves 2016
Form 10-K 2015
Other 2015
Year-end Mineral Reserves 2015
Other 2012
Other 2012
Preliminary Economic Assessment 2009
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