Overview
Status | Care and Maintenance |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 2023 |
Atlantic Operations consists of Touquoy open pit, along with three additional projects nearby at Beaver Dam, 15 Mile and Cochrane Hill.
Atlantic Operations announced in July 2023 that due to the inability to obtain permits for in-pit tailings deposition within a reasonable time, the Touquoy mine will move to care and maintenance.
October 2023 - Touquoy operation has recently transitioned into Care and Maintenance.
The priority is the standalone development of 15 Mile with the relocation of the Touquoy processing plant confirmed as an attractive development option. As a result the St Barbara has withdrawn existing permit applications relating to in-pit tailings at Touquoy and the previous development plans for Beaver Dam and Fifteen Mile. |
Source:
p. 4,85
St Barbara Limited owns the Atlantic Gold operation through its wholly owned subsidiary Atlantic Mining NS Inc.
Contractors
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Deposit Type
- Orogenic
- Vein / narrow vein
- Mesothermal
Summary:
The known deposits within the Atlantic operation area are considered to be examples of turbidite-hosted, orogenic mesothermal gold deposits.
The Meguma Terrane of Nova Scotia hosts the Moose River Member, Tangier Member, and Taylors Head Member of the basal greywacke-dominated Goldenville Formation. Gold mineralization is generally hosted in argillite and/or greywacke sequences of the Moose River Member and is associated with regional-scale anticlines. Structural repetition due to folding and faulting may result in thickening of gold-bearing units.
Gold occurs as native gold, and has been observed in a number of settings, including along shear cleavage, hair line fractures; in pressure shadows; as inclusions; on the margins of sulphide grains; in thin, bedding-parallel quartz veins and stringers. Mineralization is associated with sulphides, including arsenopyrite, pyrite and pyrrhotite. Lesser chalcopyrite, galena, and sphalerite have been observed.
Gold grade was estimated using multiple indicator kriging (MIK) for all deposits. The basic unit of estimation is a panel with horizontal dimensions equal to the average drill hole spacing.
Dimensions
Touquoy: strike extent = 810m ; width = 50m; vertical extent = 150m.
Beaver Dam: strike extent = 810m ; width = 50m; vertical extent = 200m.
Fifteen Mile Stream: strike extent = 1400m ; width = variable 20m to 100m; vertical extent = 225m.
Cochrane Hill ........

Summary:
Touquoy mine
2023 - In-pit mining ceased in February, at which time the operation commenced processing historic stockpiles. Touquoy operation has transitioned into Care and Maintenance.
Description (2019)
Mining is based on conventional open pit methods suited for the project location and local site requirements. The mining fleet will include diesel powered down the hole (DTH) drills with 144 mm bit size for production drilling, diesel-powered RC drills for bench-scale grade control drilling, 5 m3 bucket size diesel hydraulic excavators and 7 m3 bucket sized wheel loaders for production loading, and 64 t payload rigid-frame haul trucks and 41 t articulated trucks for production hauling, plus ancillary and service equipment to support the mining operations. In-pit dewatering systems will be established for each pit. All surface water and precipitation in the pits will be handled by submersible pumps.
Pit designs are configured on 10 m bench heights, with 8m wide berms placed every two benches, or double benching. Bench face angles, and subsequent inter-ramp angles are varied based on prescribed azimuths and depth from surface, as specified by each geotechnical report.
The pit slope criteria for Touquoy are based on a 2011 geotechnical report by Peter O’Bryan & Associates (O’Bryan, 2011). The shallower slopes at the 60 m depth are based on the requirement for a 15 m wide catch berm at this bench.
15 Mile project (2023)
Source:
p.331-333
Source:

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Flow Sheet:
Summary:

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Production:
Atlantic Gold was acquired on 19 July 2019. Reported Q1 Sep FY20 production included 4,362 ounces produced by Atlantic Gold prior to acquisition.
Commodity | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
Gold
|
oz
| ......  | ......  | ......  | ......  | ......  | 90,531 |
All production numbers are expressed as metal in doré.
^ Guidance / Forecast.
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Operational Metrics:
Metrics | 2023 | 2022 | 2021 | 2020 | 2018 |
Annual milling capacity
| ......  | | ......  | | |
Ore tonnes mined
| ......  | ......  | ......  | 4,574 kt | 3,972,813 t |
Waste
| ......  | ......  | ......  | 3,491 kt | |
Total tonnes mined
| ......  | ......  | ......  | 7,609,000 t | 6,800,668 t |
Tonnes milled
| ......  | ......  | ......  | 2,588 kt | 2,108,420 t |
Daily mining rate
| ......  | ......  | ......  | | 18,632 t |
Daily milling rate
| ......  | ......  | ......  | | 5,776 t |
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Reserves at December 31, 2022:
Ore Reserves Cut-off Grades: 0.3 g/t Au – 0.4 g/t Au.
Mineral Resources Cut-off Grades: 0.3 g/t Au.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
Stockpiles
|
5,420 kt
|
Gold
|
0.5 g/t
|
80 koz
|
Proven
|
In-Situ (OP)
|
20,420 kt
|
Gold
|
1.1 g/t
|
753 koz
|
Probable
|
In-Situ (OP)
|
20,120 kt
|
Gold
|
1.1 g/t
|
696 koz
|
Proven & Probable
|
Stockpiles
|
5,420 kt
|
Gold
|
0.5 g/t
|
80 koz
|
Proven & Probable
|
In-Situ (OP)
|
40,550 kt
|
Gold
|
1.1 g/t
|
1,449 koz
|
Measured
|
In-Situ (OP)
|
22,135 kt
|
Gold
|
1.1 g/t
|
800 koz
|
Indicated
|
In-Situ (OP)
|
28,461 kt
|
Gold
|
1 g/t
|
922 koz
|
Inferred
|
In-Situ (OP)
|
6,428 kt
|
Gold
|
1.1 g/t
|
221 koz
|
Total Resource
|
In-Situ (OP)
|
57,024 kt
|
Gold
|
1.1 g/t
|
1,942 koz
|
Source:

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Corporate Filings & Presentations:
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