Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2030 |
Source:
p. 59
The Fort Knox mine is owned and operated by Kinross’ wholly-owned subsidiary Fairbanks Gold Mining Inc. (“FGMI”).
Contractors
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Deposit Type
- Vein / narrow vein
- Breccia pipe / Stockwork
- Skarn
Summary:
The Fort Knox deposit is classified as an Intrusion-Hosted Mesozonal deposit in the Reduced Intrusion-Related Gold Deposit (RIRG) style (Hart, 2005). RIRG deposits typically occur associated with moderately reduced intrusions in reduced siliciclastic sequences, and have a common association with W-Sn±Mo metallogenic belts. The key characteristics of these deposits are a low sulfide content, association with reduced ore mineral assemblages, and metal assemblages of Au>Ag, Bi, As, W, and Mo (Robert, 2007). The reduced intrusion occurs as equigranular and multiphase granitic stocks and batholiths. Gold is hosted in sheeted veins, which are coeval with their causative intrusion (Robert, 2007). Although these deposits do not have a significant hydrothermal alteration footprint, there are often peripheral mineralization occurrences and proximal thermal alteration, which have a predictable distribution pattern, including secondary aluminosilicates, biotite, and tourmaline, skarns and polymetallic veins (Hart, 2005; Robert, 2007). The Gil deposit is hosted in skarns and quartz veins within the skarns.
Gold mineralization at Fort Knox Mine is hosted entirely within the Late Cretaceous (~92 Ma), Fort Knox granite pluton. The contact with the Fairbanks Schist is abrupt. Drilling indicates that the pluton contacts plunge steeply to the north and south and moderately to the east and west. The surface exposure of the pluton is approximately 1,100 m (3,609 ft) in the east-wes ........
Summary:
The Fort Knox property is located in Fairbanks North Star Borough, Alaska and includes the main Fort Knox open pit mine, mill, tailings storage facility, heap leach facilities, the Gil-Sourdough Exploration project, and the former True North mine site. The Gil Project is located approximately six miles east of the Freshwater Reservoir at Fort Knox. The project is connected to the Fort Knox operational area by a production haul road that originates near the Fort Knox TSF dam and ends at the project site.
The existing operation is a conventional hard-rock open pit using drilling, blasting, loading, hauling and support functions.
Mining is currently performed using 9 m (30 ft) benches, which are mined as single benches in schist and in double-bench orientations in granites.
The Fort Knox mine operates 24 hours per day, 365 days per year.
Source:
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Flow Sheet:
Summary:
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Production:
| Commodity | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Gold Equivalent
|
oz
| ...... | ...... | ...... | 255,569 | 381,115 | 409,844 |
All production numbers are expressed as metal in doré.
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Operational Metrics:
| Metrics | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Ore tonnes mined
| ...... | ...... | 25,367 kt | 24,646 kt | 26,362 kt | 31,750 kt |
|
Tonnes processed
| ...... | ...... | 26,562 kt | 28,097 kt | 32,736 kt | 42,360 kt |
|
Daily milling capacity
| ...... | ...... | | 36,287 t | | |
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Reserves at December 31, 2021:
Mineral reserves cutoff grade: 0.10 to 0.36 g/t Au.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
34,810 kt
|
Gold
|
0.3 g/t
|
375 koz
|
|
Probable
|
196,575 kt
|
Gold
|
0.3 g/t
|
2,092 koz
|
|
Proven & Probable
|
231,385 kt
|
Gold
|
0.3 g/t
|
2,467 koz
|
|
Measured
|
7,685 kt
|
Gold
|
0.3 g/t
|
77 koz
|
|
Indicated
|
168,931 kt
|
Gold
|
0.3 g/t
|
1,600 koz
|
|
Measured & Indicated
|
176,616 kt
|
Gold
|
0.3 g/t
|
1,677 koz
|
|
Inferred
|
85,071 kt
|
Gold
|
0.2 g/t
|
672 koz
|
| Type | Material | Diameter | Length | Description |
Corporate Filings & Presentations:
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