Overview
Stage | Permitting |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Drift & Fill
- Cemented backfill
- Backfill
|
Mine Life | 8 years (as of Jan 1, 2021) |
The gold deposit defined at McCoy-Cove represents one of the highest-grade deposits with resources in excess of 1 million ounces of gold in North America.
During the quarter that ended September 30, 2023, the Company was primarily focused on exploration and pre-development activities at the McCoy-Cove project.
Highlights for the three and nine months ended September 30, 2023, include: - The final 143 feet of the exploration decline was completed and is being used to drill in the Helen and Gap zones. - Advancing permitting for full mine plan. - Groundwater modeling is in progress. The 40-day pump test scheduling and procurement is advancing. |
Latest News | i-80 Gold Announces High-Grade Results from Underground Drilling at Cove November 20, 2023 |
Source:
p. 9,63
The i-80 Gold Corp. interest in the McCoy-Cove Project is held through Premier USA and Au-Reka LLC. Premier Gold Mines USA, Inc. holds 100% of the McCoy-Cove Property through its wholly-owned subsidiary, Au-Reka Gold LLC.
Contractors
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Deposit Type
- Skarn
- Vein / narrow vein
- Carlin-type
- Carbonate replacement
Summary:
Geology and Mineral Resource The Cove Project contains four structurally controlled mineralized zones within the Triassic sedimentary package. The Helen and Gap zones are Carlin Style disseminated refractory gold deposits. The Cove South Deep (CSD) gold and silver mineralization is associated with disseminated sulfides and is characterized by Ag:Au ratios of 50:1 to over 100:1. The 2201 zone is comprised of disseminated sulfides within sheeted stockwork veins with high concentrations of lead and zinc.
The Cove-Helen deposit consist of two mineralization styles, Carlin-style and polymetallic sheeted veins. The Carlin-style mineralization within the Helen, Gap, and CSD zones comprises approximately 85% of the existing resource with high gold and silver grades occurring as both stratabound and structurally controlled mineralization at the intersection of the Cove anticline and favorable lithologic beds, structures, intrusive dikes and sills.
The polymetallic 2201 zone is a separate deposit from the shallower Carlin-style mineralization and is believed to be a structurally controlled sheeted vein system. Veining is oriented northwest, with vein geometry being controlled by a deeper northwest striking reverse fault. Due to its depth, the 2201 zone has seen limited drilling since its original discovery in late 2013, however, additional infill and step-out drilling in the future will help to better define deposit potential and mineralization controls.
Mining Methods
- Drift & Fill
- Cemented backfill
- Backfill
Summary:
Due to the mostly flat geometry of the ore lenses, all planned production mining will be completed using drift and fill mining. The final choice of mining method will depend upon the geometry of the stope block, proximity to main access ramps, ventilation and escape routes, the relative strength or weakness of the mineralized material and adjacent wall rock, and finally the value or grade of the mineralized material. The choice of mining method will not be finalized until after the stope delineation and definition drilling is completed.
Development and production mining will be performed by a qualified mining contractor.
ACCESS DEVELOPMENT
Underground access to the mining areas will begin with a portal on the North side of the existing pit and ramp down. Initial work will consist of 4,557 feet of decline from the portal down to approximately the 4600-foot elevation and 889 feet of drill laterals. The drill laterals are located directly above the Helen and Gap deposits.
Primary access drifts are designed 15 feet wide and 17.5 feet high to permit 30-ton haulage trucks and provide a large cross section for ventilation. Drift gradients will vary from – 15% to + 15% to reach the desired elevation. Secondary drifts, spiral ramps and vertical raises will connect the haulage drifts to provide a pathway for ventilation to the surface and serve as a secondary escape way.
GROUND SUOOPRT
It is expected that Swellex rock bolts along with welded wire mesh will be able to control all co ........

Source:
Summary:

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Projected Production:
Commodity | Units | Avg. Annual | LOM |
Gold
|
koz
| 102 | 743 |
All production numbers are expressed as metal in doré.
Operational Metrics:
Metrics | |
Daily ore mining rate
| ......  |
Daily mining rate
| ......  |
Ore tonnes mined, LOM
| ......  |
Total tonnes mined, LOM
| ......  |
* According to 2021 study.
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Reserves at January 1, 2021:
Mineral Resources have been estimated using a gold equivalent cutoff grade of 0.141 opt.
Category | Tonnage | Commodity | Grade | Contained Metal |
Indicated
|
1,110 k tons
|
Gold
|
0.316 oz/ton
|
351 koz
|
Indicated
|
1,110 k tons
|
Silver
|
0.85 oz/ton
|
943 koz
|
Inferred
|
4,262 k tons
|
Gold
|
0.317 oz/ton
|
1,353 koz
|
Inferred
|
4,262 k tons
|
Silver
|
0.602 oz/ton
|
2,565 koz
|
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