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Canada
Stog’er Tight Mine (Point Rousse Operation)

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 Location:
9 km NE from Baie Verte, Newfoundland and Labrador, Canada

  Address:
232 Highway 410
PO Box 238
Baie Verte
Newfoundland and Labrador, Canada
A0K 1B0
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  • Overview
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  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2 years (as of Jan 1, 2022)
The Point Rousse Operation contains three deposits Pine Cove, Stog’er Tight, Argyle and the fully permitted Pine Cove Mill. Point Rousse is transitioning to care and maintenance. Initial mining at Stog’er Tight took place between 2016 to 2019.

The 2022 Technical Report demonstrates the economic potential to develop the Stog’er Tight Deposit at Point Rousse.

The Signal Gold has decided it will not proceed with the non-material development of the Stog’er Tight Deposit at Point Rousse at this time.


Owners

Source: p. 16
CompanyInterestOwnership
Signal Gold Inc. 100 % Indirect
Signal Gold Inc. (formerly Anaconda Mining Inc.) is the 100% owner and operator of the Point Rousse Project.

Contractors

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Deposit Type

  • Orogenic
  • Vein / narrow vein


Summary:

The Point Rousse Complex is host to orogenic-style gold mineralization. Mineralization comprises both vein-hosted and altered-wall rock or replacement styles of mineralization and both exhibit features common to orogenic gold deposits. The mineralization is typically structurally controlled and developed within subsidiary deformation zones, such as the Scrape Trust Fault, to major regional structures, like the Baie Verte – Brompton Line fault. gold mineralization is intimately associated with disseminated and massive pyrite within the host rock indicating that iron rich rocks are an important precursor to mineralization. Alteration within mafic volcanic and gabbroic rocks can be is characterized by albitization and carbonitization. Iron and titanium rich lithologies associated with the Scrape Thrust are typical host rocks. The Point Rousse gold mineralization exhibits relatively narrow, but distinctive alteration haloes dominated by Fe-carbonate, albite, sericite, chlorite and leucoxene (Plate 9). The ore mineralogy is relatively simple and is generally comprised of non-refractory gold either as free gold or as coatings on, or along fractures/grain boundariesin pyrite. Silver and base metals can be present in minor amounts and the deposits typically exhibit only trace arsenic. D3 deformation produced F3 mesoscopic northward-verging asymmetric folds that affect all the D1/D2 fabrics, shear zones and related alteration. The F3 folds trend roughly southeast and plunge shallowl ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Signal Gold’s has decided it will not proceed with the non-material development of the Stog’er Tight . The Stog’er Tight Deposit was previously mined in 2019 and the supporting infrastructure from that period has been maintained. The current mine design at the Stog’er Tight Deposit includes two open pits: The Gabbro Pit and 278 Pit. The Gabbro Pit has proposed surface dimensions of 550 m by 275 m with 70 m maximum depth. The Stog’er Tight pit design was based on five-metre contour intervals. The benches were quadrupled to a final height of 20 m with berm widths of 8 m and a batter angle of 70-80 degrees. The main access ramps are designed at a 10% gradient with 20 m ramps to facilitate two-way 38 tonne capacity haul truck traffic. Final pit bottom access ramps are designed at a gradient of 10% and a width of 12 m to accommodate one-way traffic The designed overburden/organics stockpile will have capacity of approximately 286,000 tonnes of overburden and 32,000 to of organics. The 2019 Stog’er Tight waste rock storage area has been redesigned to accommodate 5.8 M tonnes of waste rock from the Gabbro and 278 pits. Gabbro (Zone) Open Pit Gabbro ore mined using conventional open pit mining methods with waste rock stored locally at site and ore being stockpiled on site and then transported by truck to the Pine Cove Mill. Total waste mined is 4,017,000 tonnes at an average strip ratio of 8.3 waste tonnes to one ore tonne. The design/selection process for pit optimization was ........


Crushing and Grinding
Flow Sheet: Source

Ore is fed to the crushing plant via front end loader, where it first enters a jaw crusher. After crushing, a conveyor takes the ore to a screen deck, where the fine material is separated. Oversize ore is recirculated through a cone crusher until it reaches the desired top size of 3/8 inches.

Ore from the crushed stockpile is then fed to the primary ball mill via conveyor belt, and typically averages 1.0 to 2.0 g/t gold. The ball mill is charged with 2 inch and 3 inch balls, and grinds material to a K80 of 150 micron. Material from the ball mill is pumped through a cyclone, where liberated material is fed into the flotation circuit via an overflow. Any coarse material is returned to the ball mill.


Processing

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Summary:

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Production:

CommodityUnits2016
Gold oz 1,462
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics201820172016
Ore tonnes mined 189,484 t27,260 t
Tonnes processed 1,404 t25,158 t
Total tonnes mined 82,298 t
Waste 55,038 t
Stripping / waste ratio 2

Reserves at September 30, 2022:
Mineral Resources are reported at a CoG of 0.59 g/t gold that is based on a gold price of CAD$2,000/oz (approximately US$1,550/oz) and a gold processing recovery factor of 87%.

Mineral Reserves were estimated at a cut-off grade of 0.62 g/t gold and gold price of CA$2,000/oz (US$1,550/oz).

CategoryTonnage CommodityGradeContained Metal
Probable 726,600 t Gold 1.97 g/t 46,100 oz
Indicated 642,000 t Gold 3.02 g/t 62,300 oz
Inferred 53,000 t Gold 5.63 g/t 9,600 oz



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 27, 2023
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Corporate Filings & Presentations:

DocumentYear
Annual Information Form 2022
Management Discussion & Analysis 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
Annual Information Form 2018
Management Discussion & Analysis 2018
Annual Information Form 2017
Technical Report 2017
Annual Information Form 2016
Management Discussion & Analysis 2016
Technical Report 2015
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