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Canada
Fifteen Mile Stream Project (Atlantic Gold Operation)

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 Location:
43 km W from Sherbrooke, Nova Scotia, Canada

  Project Contacts:
409 Billybell Way
Middle Musquodoboit
Nova Scotia, Canada
B0N 1X0
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life8.5 years (as of Jan 1, 2019)
In August 2022, the application to the Impact Assessment Agency of Canada for Fifteen Mile Stream Project to remain under the Federal Canadian Environmental Assessment Act 2012 (CEAA 2012) process was approved.


Owners

Source: p. 101
CompanyInterestOwnership
St Barbara Ltd. 100 % Indirect
On 14 September 2020, the Group, through its subsidiary Atlantic Mining Nova Scotia, acquired the remaining 93% of the issued shares of Moose River Resources Incorporated (“MRRI”) resulting in 100% St Barbara ownership.

Contractors

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Deposit Type

  • Vein / narrow vein


Summary:

Individual mining operations, including mining at Fifteen Mile Stream, have focussed on quartz-vein hosted gold deposits within the Goldenville Formation, typically associated with the limbs and hinges of anticlines. This setting is often referred to as ‘Meguma style’ gold mineralization and a number of workers have drawn parallels with a similar style of gold mineralization in the Victorian Goldfields of eastern Australia (e.g. Christie et al, 1999) .

At Fifteen Mile Stream, the highest gold grades are typically associated with beddingparallel tabular quartz veins. However, the host rock material between quartz veins also carries significant gold grades. It is the quartz vein hosted gold mineralization augmented by disseminated style mineralization that forms the basis of a geological model associated with the ongoing exploration and development of the Fifteen Mile Stream gold deposit.

Mineralization at Fifteen Mile Stream is focused in the hinge of a regional anticline and generally conforms to a saddle-reef style model where veins and related alteration occur in bedding-parallel structures resulting from folding. Fold related strain is focused within the softer meta-mudstone units thus mineralization is generally controlled by stratigraphy, with bedding-parallel quartz veins and related alteration mainly confined to meta-mudstone intervals. True saddle-reef quartz veins do not occur within any of the mineralized zones. However a thick bedding-paralle ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

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.

Two independent stand-alone open pit operations at Fifteen Mile Stream and Cochrane Hill will run concurrently with the Touquoy and Beaver Dam operations. At Fifteen Mile Stream, ore will be hauled to a crusher that will be located 1,500 m southeast of the pit, which will feed the process plant. Waste rock will be split into potentially acid-generating (PAG) and non-potentially acid generating (NPAG) material and deposited into WRSFs to be situated 700 m south of the pit or will be used as rock fill in construction of the TMF to be located 1,700 m east of the pit.

At Fifteen Mile Stream, the Egerton–MacLean pit is split into south and north phases with the higher-grade and lower strip ratio south phase mined ahead of the north phase. The Hudson and Plenty pi ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Combined production numbers are reported under Atlantic Gold Operation

Operational Metrics:

Metrics
Stripping / waste ratio 2.3 *
Waste tonnes, LOM 39,384 kt *
Ore tonnes mined, LOM 16,764 kt *
Total tonnes mined, LOM 56,148 kt *
Tonnes milled, LOM 16,764 kt *
Annual milling capacity 2 Mt *
* According to 2019 study.

Reserves at February 15, 2019:
Mineral Reserves and Mineral Resources are reported at a cut-off grade of 0.30 g/t

CategoryTonnage CommodityGradeContained Metal
Proven 5.58 Mt Gold 1.09 g/t
Probable 11.18 Mt Gold 1.06 g/t
Measured 5.9 Mt Gold 215.1 koz
Indicated 13.11 Mt Gold 461.1 koz
Measured & Indicated 19.03 Mt Gold 676.1 koz
Inferred 2.07 Mt Gold 84.3 koz

Commodity Production Costs:

CommodityUnitsAverage
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2019 study / presentation.

Operating Costs:

Units2019
OP mining costs ($/t milled) CAD 9.56 *
Processing costs ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2019 study.
Subscription required - Subscription is required.

2019 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of May 19, 2019:
HME TypeSizeQuantityLeased or
Contractor
Bulldozer 325 kW ....................... Subscription required Leased
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
................................... Subscription required 2019
Corporate Presentation 2018
Press Release 2018
Technical Report 2015
Subscription required - Subscription is required.

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