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United States
Exodus Mine (Carlin Complex)

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 Location:
32 km NW from Carlin, Nevada, United States

  Regional Office:
1655 Mountain City Highway
Elko
Nevada, United States
89801
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WebsiteWeb
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Drift & Fill
  • Longhole stoping
  • Cemented backfill
Production Start...
The Exodus mine is part of the Carlin complex.


Owners

Source: p. 76-78
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. (operator) 61.5 % Indirect
On July 1, 2019, Barrick's Goldstrike and Newmont's Carlin operation were contributed to the Nevada Gold Mines joint venture and are now collectively referred to as Carlin.

Barrick is the operator of the Nevada Gold Mines LLC 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
  • Stratabound
  • Hydrothermal


Summary:

The mineral deposits along the Carlin Trend form a suite of deposits known as Carlin-type. Carlin deposits comprise stratabound disseminated gold mineralization hosted by Silurian-Devonian carbonate rocks that have been metamorphosed to varying extents. The deposits are hydrothermal in origin and are usually structurally controlled.

Lithologic units include the typical Carlin lower plate stratigraphy of the Ordovician Hanson Creek Formation (Ohc), Silurian/Devonian Roberts Mountains Formation (SDrm), Devonian Popovich Formation (Dp), Devonian Rodeo Creek Formation (Drc), and upper plate Ordovician Vinini Formation (Ov). The Devonian Popovich Formation consists of sub-units Upper Mud (DpUM), Soft Sediment Deformation (DpSSD), Planar (DpPL), and Wispy (DpWS). A series of igneous dikes intrude the sediments and have been identified as lamprophyres, biotite-feldspar porphyries, and granodiorite. These units are uncomformably overlain by the upper plate Ordovician Vinini Formation.

Mineralization, primarily hosted in the Devonian Popovich Formation (Dp), is bound on the west by the Castle Reef Fault (CRF) and restricted to the east by the Eastern Dike Swarm (EDS). This structurally controlled system follows near vertical structural fabrics and crosses stratigraphic boundaries. The highest gold values are located adjacent to, or within, the steeply dipping Big Green Dike (BGD), Castle Reef Intrusive (CRI), and Eastern Dike Swarm (EDS). These intrusive filled s ........


Mining Methods

  • Drift & Fill
  • Longhole stoping
  • Cemented backfill


Summary:

The Carlin Complex has three major operating underground mines including Goldstrike underground, Leeville and the Portal Mines (including Pete Bajo and Exodus/Northwest Exodus). All mines utilize drift and fill and/or long-hole stoping and are accessed by shaft or portals.

The primary mining method at Exodus and Northwest Exodus is long-hole open stoping with some drift and fill mining planned in areas with less vertical extent.

Northwest Exodus is mined with longhole open stoping using a primary and secondary pass sequence similar to Exodus. Results of the geotechnical analysis completed for Northwest Exodus have been used to develop design criteria for the mine. Because poor ground conditions at Northwest Exodus are expected to be encountered, the production levels are spaced at 19.8 metres (65 ft) intervals, with single lift stopes being mined. Primary stopes at Northwest Exodus are designed at widths of 6.1 metres (20 ft) and secondary stopes are designed 12.2 metres (40 ft) wide. Stopes and stope development are backfilled with either CRF or unconsolidated waste rock.


Crushing and Grinding


Processing

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Summary:

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Combined production numbers are reported under Carlin Complex


Combined reserves/resources are reported under Carlin Complex




Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
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Staff:

EmployeesYear
Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2016
Form 10-K 2015
Other 2015
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