Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Drift & Fill
- Longhole stoping
|
| Production Start | ...  |
The Pete Bajo mine is part of the Carlin complex. |
Source:
p. 76-78
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
- Hydrothermal
- Stratabound
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.
The Pete Bajo Complex is made up of three deposits: Pete Bajo, Fence, and Full House. Pete Bajo is the down-dip extension of the mineralization mined in the Pete open pit. The Fence deposit is located to the north, about 366 m down-dip of the Pete Bajo deposit. Full House is a down-dip extension of the Carlin East deposit and is offset by the Bullmoose Fault.
Lithologic units recognized in the Pete Bajo Complex include the upper portion of the Hanson Creek Formation (Ohc), Roberts Mountains Formation (SDrm), Popovich Formation (Dp), Rodeo Creek Formation (RC), and the upper plate Vinini Formation (Ohc).
The majority of the gold mineralization in the Pete Bajo Complex is hosted within the lower unit of the Popovich Formation (DpW). Localized, thin intercepts are also present within the Roberts Mountains Formation (SDrm) unit. Low angle faulting along the Popovich Formation (Dp/SDrm) contact thins or removes the upper units of the DpW within various zones of Pete Bajo resulting in discontinuous mineralized strata. These units are subsequently offset by a series of northwest striking apparent normal faults that dip ........
Mining Methods
- Drift & Fill
- Longhole stoping
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 mining methods used at Pete Bajo are primarily longhole open stoping with some overhand drift and fill. Mining sizes and orientations are defined by orebody geometry, geotechnical parameters and minimum mining sizes based on the equipment fleet.
Typical heading dimensions are 4.6 metres (15 ft) high and wide, and stopes are 4.6 metres (15 ft) wide for primary, and 9.1 metres (30 ft) for secondary stopes. Mining height is defined by orebody thickness. Where there is sufficient vertical extent, sub-levels for stopes are established at 13.7 m (45 ft) intervals.
Flow Sheet:
Summary:
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Mine Management:
| Job Title | Name | Profile | Ref. Date |
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Aug 5, 2022
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