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Russia
Gross Mine

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 Location:
130 km NE from Chara, Russia

  Regional Office:
Republic of Sakha (Yakutia), Neryungri town. Hani pgt. 70 years of October, d. 3, kv. 55
Russia
678976
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Heap leach
  • Carbon adsorption
  • Cyanide (reagent)
Mine Life17 years (as of Jan 1, 2020)
In September 2018 Nordgold’s new Russian flagship Gross mine was officially launched.


Owners

Source: p. 128
CompanyInterestOwnership
Nord Gold N.V. 100 % Indirect
Neryungri-Metallik LLC is a subsidiary of Nord Gold N.V.

Deposit Type

  • Sediment-hosted


Summary:

The Gross deposit is hosted within shallowly dipping lower Proterozoic sandstones lying unconformably over Archaean gneisses and schists. The sandstones have been subjected to broad scale metasomatism with associated potassic alteration. Gold and silver mineralisation is associated with this metasomatism. The principal tectonic features in the area consist of a set of N-S striking, steeply dipping faults, a NE – SW striking and steeply dipping shear zone and a shallow thrust of E-W strike, dipping to the south at 20-30°.

The Gross deposit consists of low grade disseminated gold and silver mineralisation associated with the metasomatically altered sandstone sequences. The mineralised sequence is typically between 20m to 200m thick striking approximately east-west and dipping at a shallow 30° to the south. Mineralisation remains open along strike and down dip.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mine Type: Classical single open pit mine with average throughput of 12.0Mtpa and average stripping ratio of 3.25t/t.


Crushing and Grinding


Processing

  • Heap leach
  • Carbon adsorption
  • Cyanide (reagent)

Source: Subscription required

Summary:

Processing Type: Heap leach processing technology for low grade ore.
- ore crushing: Two stage crushing to -65mm and -40mm, 2000tph
- ore transportation: 5km conveyors from crusher to leach pad and to ore dump
- leaching process: Steam heated cyanide solution, absorption to activated carbon
- recovery: 82.50%

CommodityParameter
Gold Recovery Rate, %
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Production:

CommodityUnits20192018
Gold koz  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré.
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Operational Metrics:

Metrics2019
Annual processing capacity  ......  Subscription required
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Reserves at December 31, 2017:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Total 8,498 kt Gold 0.56 g/t 152 koz
Probable Total 181,318 kt Gold 0.73 g/t 4,256 koz
Proven & Probable Total 189,816 kt Gold 0.72 g/t 4,408 koz
Measured Stockpiles 3,749 kt Gold 0.33 g/t 39 koz
Measured In-Situ (OP) 7,784 kt Gold 0.69 g/t 172 koz
Indicated In-Situ (OP) 374,496 kt Gold 0.67 g/t 7,910 koz
Measured & Indicated Total 386,029 kt Gold 0.68 g/t 8,121 koz
Inferred In-Situ (OP) 78,618 kt Gold 0.64 g/t 1,619 koz
Total Resource Total 464,647 kt Gold 0.67 g/t 9,740 koz

Commodity Production Costs:

CommodityUnits20192018
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required
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Financials:

Units201920182017
Sustaining costs M USD  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue 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 May 15, 2020
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Staff:

EmployeesYear
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Corporate Presentation 2017
Year-end Mineral Reserves 2014
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Aerial view:

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