Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2027 |
The Pan Mine is a Carlin-style, open-pit, heap-leach mine. |
Source:
p. 4,63
The Pan gold property is owned by Calibre Pan, LLC, a wholly owned subsidiary of Calibre Mining Corp.
Contractors
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Deposit Type
- Breccia pipe / Stockwork
- Carlin-type
- Epithermal
Summary:
Local and Property Geology
Geology in the Project area is dominated by Middle to Late Paleozoic stratigraphy overlain by minor Tertiary-aged volcanic units. Quaternary-aged detrital deposits are limited to drainage channels. Consequently, there is good bedrock exposure in most of the Project area.
Significant Mineralized Zones
Pan has three main mineralized zones; North, Central, and South. Gold mineralization spatially follows the Devils Gate Limestone – Pilot Shale contact in all three and is also controlled by steeply-dipping faults that trend north-south and secondarily by west-northwest (WNW) open fold axes. North Pan is dominated by: 1) near-vertical pipes and bodies of silicified solution breccia localized at the Pilot Shale–Devils Gate Limestone contact adjacent to the BFZ, and 2) stratiform-like modestly dipping breccia bodies and zones west of the BFZ focused near the locally folded Pilot Shale–Devils Gate contact. Central and South Pan have more argillic alteration than silicic. Mineralization in Central Pan is at the Pilot–Devils Gate contact and secondarily controlled by WNW trending open folds, and likely other subtle structures which have not been clearly identified. These open folds were not recognized from exploration drilling, and have only become apparent after exposure in the pit walls. Their significance in controlling mineralization is also subtle but has been confirmed by examination of blast hole assays. South Pan mineralization occurs in two zon ........
Summary:
Currently, conventional open pit mining methods are implemented at Pan. A contract miner is conducting the mining activities. Ore and waste are drilled and blasted, then loaded into CAT 777 haul trucks with CAT 992 wheel loaders. The loading and haulage fleet is supported by track dozers, motor graders, and water trucks. Waste is hauled to waste rock storage facilities near each pit. Ore is hauled and placed directly at the crusher feed stockpile and overflow ore is placed directly on the heap leach pad. The ore placed at the crusher feed stockpile is rehandled into the crusher with one CAT 988 wheel loader operated by GRP. The crushed ore is then rehandled from the crushed ore stockpile into CAT 777 haul trucks with CAT 992 wheel loaders and placed on the heap leach pad.
The Pan Mine uses a mining contractor for all mining activities with the exception of crushing the ore and placement of ore into the crusher. The Pan Mine owns, operates, and maintains all other equipment on the site.
Ore production is planned at a nominal rate of 12,325 t/d, equivalent to 4.5 Mt/y with an expected 5-year mine life. Mining is planned on a 7 day per week schedule on a double 12-hour shift per day Monday through Thursday and single 12-hour day shift Friday through Sunday, 365 days per annum. Peak ore and waste production is estimated at 58,000 t/d, with the average production being 40,000 t/d. The average LOM stripping ratio is 2.03:1?waste-to-ore, using a 0.004 oz/ton i ........
Source:
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Flow Sheet:
Summary:
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Source:
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Production:
Commodity | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Gold
|
oz
| ...... | ...... | ...... | ...... | ...... | 34,297 | 10,064 |
All production numbers are expressed as metal in doré.
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Operational Metrics:
Metrics | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
Ore tonnes mined
| ...... | ...... | | ...... | 5,081,729 tons | 5,193,397 tons |
Waste
| ...... | ...... | | ...... | 8,964,960 tons | 6,293,144 tons |
Total tonnes mined
| ...... | ...... | | ...... | 14,046,689 tons | 11,486,541 tons |
Tonnes processed
| ...... | ...... | | ...... | | |
Daily ore mining rate
| ...... | ...... | ...... | ...... | 13,923 tons | 14,228 tons |
Stripping / waste ratio
| ...... | ...... | ...... | ...... | 1.8 | 1.2 |
Daily mining rate
| ...... | ...... | ...... | ...... | | 31,470 tons |
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Reserves at December 31, 2023:
Resources are domain edge diluted and reported using a minimum internal gold cutoff grade of 0.003 oz/st Au (0.10 g/t Au).
Reserves for argillic (soft) ore are based upon a minimum 0.003 opt Au (0.10 g/t) internal cut off grade (COG), using a US$1,600/oz Au sales price and a gold recovery of 85%.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
4 k tons
|
Gold
|
0.017 oz/ton
|
0.07 koz
|
Probable
|
27,150 k tons
|
Gold
|
0.01 oz/ton
|
273 koz
|
Proven & Probable
|
27,154 k tons
|
Gold
|
0.01 oz/ton
|
273 koz
|
Measured
|
74 kt
|
Gold
|
0.44 g/t
|
1 koz
|
Indicated
|
29,177 kt
|
Gold
|
0.36 g/t
|
339 koz
|
Measured & Indicated
|
29,251 kt
|
Gold
|
0.36 g/t
|
340 koz
|
Inferred
|
1,479 kt
|
Gold
|
0.37 g/t
|
18 koz
|
Corporate Filings & Presentations:
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