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United States
Nevada Gold Mines Operation (Cortez Mine, El Nino (South Arturo) Mine, Goldrush Project, Goldstrike Mine, Long Canyon Mine, Phoenix Mine, Robertson Project, Turquoise Ridge Mine, Turquoise Ridge Surface Mine)

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 Location:
52 km NW from Elko, Nevada, United States
  Regional Office:
1655 Mountain City Hwy
Elko
Nevada, United States
89801
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  • Overview
  • Owners
  • Geology
  • Mining
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  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Silver
  • Copper
Mining Method
  • Truck & Shovel / Loader
  • Drift & Fill
  • Mechanized Cut & Fill
  • Longhole stoping
  • Longhole open stoping
  • Transverse stoping
  • Cemented backfill
  • Paste backfill
Nevada Gold Mines includes:
- Barrick: Goldstrike, Cortez, Turquoise Ridge, Goldrush, and South Arturo;
- Newmont Goldcorp: Carlin, Twin Creeks, Phoenix, Long Canyon, and Lone Tree.

Assets in Nevada Gold Mines are 10 Underground Mines, 12 Open Pit Mines, 2 Roaster Facilities, 2 Autoclave Facilities, 2 Flotation Facilities, 2 Oxide Mills, 10 Heap Leach Facilities,

On October 14, 2021, Pursuant to the Exchange Agreement, the i-80 Gold Corp. acquired from Nevada Gold Mines LLC, by way of an asset exchange, the Lone Tree gold deposit.

Owners

Source: p. 75-76
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.

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

  • Carlin-type
  • Epithermal
  • Porphyry
  • Stratabound
  • Hydrothermal
  • Sediment-hosted
  • Skarn

Summary:

Turquoise Ridge.
The Turquoise Ridge Underground deposit is a typical Carlin-type deposit and is characterized by structurally and stratigraphically controlled, sediment-hosted, replacement deposits containing micron-sized gold.
The mineralization at Turquoise Ridge Underground is located in two main zones, North and South. In the North Zone, the strongest mineralization appears to be associated with BPH Limestone, Black Fragmental rocks, and carbonaceous rocks within the Proximal Slope unit. Stratigraphic contacts between these units and contacts with the Cretaceous dikes are important primary controls on mineralization. Powder Hill rocks, Distal Slope rocks, basalts, and dikes are insignificant hosts for mineralization in the north.

Cortez.
The Cortez deposits are “Carlin” style sedimentary rock-hosted and porphyry/epithermal deposits. Deposits are localized at contacts between contrasting lithologies, metamorphosed to varying extents. They can also be discordant or breccia-related. The deposits are hydrothermal in origin, are usually structurally controlled and at Cortez are hosted in Lower Plate carbonate strata exposed by two erosional windows through allochthonous Upper Plate siliclastic units; the windows are on either side of Crescent Valley.
Mineralization consists primarily of submicron to micrometre-sized gold particles, very fine sulphide grains, and gold in solid solution in pyrite.

Goldrush.
In 2011 the discovery ........

Mining Methods

  • Truck & Shovel / Loader
  • Drift & Fill
  • Mechanized Cut & Fill
  • Longhole stoping
  • Longhole open stoping
  • Transverse stoping
  • Cemented backfill
  • Paste backfill

Summary:

Goldstrike Complex.
Goldstrike consist of the Betze-Post open pit and the Meikle and Rodeo underground mines. Meikle is a high-grade ore body which is mined by transverse longhole stoping, underhand drift and fill mining methods. Rodeo is a trackless operation, using two different underground mining methods: long-hole open stoping and drift-and-fill.

Cortez
The Cortez Mine consists of an operating open pit and underground mine with production from several open pit deposits and one underground mine. Production is currently coming from the Cortez Hills open pit (CHOP), the Pipeline open pit, and the Cortez Hills underground (CHUG) as well as material from stockpiles accumulated from previous mining.
Open pit ore is mined by a conventional shovel-truck process at the rate of approximately 20 million tons per year with a LOM stripping ratio of 5.1:1 (waste to ore ratio). Mining occurs in two separate areas approximately 12 mi apart; CHOP and Pipeline, composed of the Pipeline and Crossroads open pits.
The underground mining is all mechanized, with large scale equipment using a combination of cut and fill mining with cemented backfill and primary and secondary longhole stoping with cemented and uncemented backfill.

Turquoise Ridge
The Turquoise Ridge Complex consists of Turquoise Ridge Underground, Vista Underground, and Turquoise Ridge Surface (consisting of the Mega and Vista Pits).
Turquoise Ridge Underground is accesse ........

Crushing and Grinding

Processing

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Summary:

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Production:

CommodityUnits2022202120202019
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
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Operational Metrics:

Metrics202120202019
Total tonnes mined  ......  Subscription required  ......  Subscription required308,059 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required51,363 kt
Waste  ......  Subscription required  ......  Subscription required256,696 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required5.86
Tonnes processed  ......  Subscription required  ......  Subscription required59,714 kt
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Reserves at December 31, 2021:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable Stockpiles 75,844 kt Gold 2.33 g/t 5,688 koz
Proven & Probable In-Situ (OP) 336,364 kt Gold 1.26 g/t 13,636 koz
Proven & Probable In-Situ (UG) 108,052 kt Gold 8.9 g/t 30,909 koz
Proven & Probable Total 520,260 kt Gold 3 g/t 50,234 koz
Proven & Probable Total 169,351 kt Silver 6.43 g/t 35,013 koz
Proven & Probable Total 226,234 kt Copper 0.17 % 857 M lbs
Measured & Indicated Total 570,909 kt Gold 1.47 g/t 26,961 koz
Measured & Indicated Total 225,714 kt Silver 5.54 g/t 40,208 koz
Measured & Indicated Total 297,662 kt Copper 0.14 % 909 M lbs
Inferred Total 302,338 kt Gold 1.56 g/t 15,195 koz
Inferred Total 49,091 kt Silver 5.6 g/t 8,857 koz
Inferred Total 51,688 kt Copper 0.13 % 156 M lbs

Commodity Production Costs:

CommodityUnits2022202120202019
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
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 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 ($/t mined) USD 2.261.911.94
UG mining costs ($/t mined) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Financials:

Units20212020
Sustaining costs M USD  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required
Operating Income M USD  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required
EBITDA M USD  ......  Subscription required  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 19, 2022
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....................... Subscription required ....................... Subscription required Subscription required Sep 19, 2022
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Staff:

EmployeesContractorsYear
Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Annual Information Form 2022
Annual Report 2022
Corporate Presentation 2022
Form 10-K 2022
Quarterly Report 2022
................................... Subscription required 2021
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................................... Subscription required 2020
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................................... Subscription required 2019
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Form 10-K 2018
Technical Report 2018
Operations & Technical Update 2017
Annual Report 2015
Preliminary Economic Assessment 2009
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