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Canada
Sugar Zone Mine (Sugar Zone Expansion Project)

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 Location:
30 km NE from White River, Ontario, Canada

  Address:
113 Tukanee Lake Rd
White River
Ontario, Canada
P0M 3G0
Phone  ...  Subscription required
Fax(807) 822-2398
WebsiteWeb
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole open stoping
  • Longitudinal retreat
  • Backfill
Production Start...
Mine Life2029


Owners

Source: p. 1
CompanyInterestOwnership
Silver Lake Resources Ltd. 100 % Indirect
On February 21, 2022, Silver Lake Resources Limited completed the acquisition of Harte Gold Corp. and now owns, through Hart Gold, a 100% interest in the Sugar Zone mine and associated 81,287 hectare land package in a prolific gold district in Northern Ontario.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Vein / narrow vein
  • Mesothermal
  • Orogenic


Summary:

The Sugar Zone Deposit is interpreted as an orogenic, mesothermal gold deposit located in a zone of high strain within the Dayohessarah Greenstone Belt. The Deposit is hosted in mediummetamorphic grade (amphibolite) rocks that exhibit ductile deformation and have been intruded by felsite and porphyry sills. The gold is associated with silica-sulphide-potassic alteration.

In the Sugar Zone Gold Deposit, gold mineralization occurs in quartz veins, quartz stringers and quartz flooded zones predominantly associated with narrow porphyry sills, porphyry contact zones, hydrothermally altered mafic metavolcanics and, rarely in weakly altered mafic metavolcanics. The mineralization occurs in three parallel zones, the Upper, Lower and Footwall Subzones, that range in thickness from 1.5 to 10 m, strike at 140° and dip between -65° and -75° to the west. The three subzones are separated by 20 to 30 m of non-mineralized metavolcanics. The Sugar Deformation Zone is a high strain deformation zone associated with the mineralization with a northwest trend and dips west at 65o to 75o . The mineralization has been defined for over 1.5 km strike length and to a vertical depth of over 1,200 m and remains open along strike and at depth. Fine to coarse-grained specks and blebs of visible gold are common in the Sugar Zone quartz veins, usually occurring within marginal, laminated or refractured portions of the veins. Quartz veins and silicified rocks also contain varying amounts of pyrrhot ........


Mining Methods

  • Longhole open stoping
  • Longitudinal retreat
  • Backfill


Summary:

The Sugar Zone and Middle Zone mineralization typically comprises tabular, narrow veins, approximately 1.5 m to 3 m thick, and dipping at around 70° to the southwest. Excessive dilution is potentially a major risk to operating success in narrow mineralization. Longitudinal longhole retreat stoping was selected as appropriate for this Deposit based on the favourable geometry, current geotechnical knowledge and success of the Bulk Sample trial mining. Both the ore and the host rock are sufficiently competent to facilitate the void sizes required for effective longhole stoping.

The longhole open stoping mining method provides the following advantages:
- Safe – personnel do not enter the production mining voids (remote-controlled equipment only).
- Proven – many instances of the methods application throughout the world.
- Highly mechanized – reduces personnel exposure to health and safety risks.
- Easy access to resources – skilled labour and equipment are readily accessible locally and around the world.
- Low cost – leverages off large drill and blast scale and minimization of development.

Paste backfill is the primary fill type and has the following advantages:
- Reduces the need for rock pillars, maximizing ore recovery.
- Reduces the duration of the stoping cycle.
- Reduces the number of diesel powered loading and hauling units underground thereby reducing the overall primary ventilation.
- Reduces the size ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:
2020 figures based on 259 operating days, including mine operating days in Q3 2020.

CommodityUnits2022202120202019
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in conc./ doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2022202120202019
Ore tonnes mined  ......  Subscription required174,539 t
Tonnes processed  ......  Subscription required  ......  Subscription required201,214 t
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required800 t
Daily ore mining rate  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required559 t
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Reserves at June 30, 2022:
A Reserve stoping cut-off grade of 3.5g/t has been used.

The Sugar Zone Resource is reported at a 2.0 g/t gold cut-off grade.

CategoryTonnage CommodityGradeContained Metal
Proven 17 kt Gold 2.4 g/t 1 koz
Probable 3,139 kt Gold 5.1 g/t 511 koz
Proven & Probable 3,156 kt Gold 5.1 g/t 512 koz
Measured 17 kt Gold 1.8 g/t 1 koz
Indicated 4,698 kt Gold 8.1 g/t 1,219 koz
Inferred 3,010 kt Gold 5.6 g/t 543 koz
Total Resource 7,725 kt Gold 7.1 g/t 1,763 koz

Commodity Production Costs:

CommodityUnits20202019
Cash costs Gold USD  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold AUD  ......  Subscription required  ......  Subscription required
All-in costs Gold AUD
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operating Costs:

Units2020
Total operating costs ($/t milled) CAD 269

Financials:

Units202220202019
Capital expenditures M  ......  Subscription required  ......  Subscription required
Revenue M  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Income M  ......  Subscription required  ......  Subscription required
Pre-tax Income M  ......  Subscription required  ......  Subscription required
After-tax Income M  ......  Subscription required  ......  Subscription required
EBITDA M  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Cash Flow M  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Ref. Date
Bolter ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Leased Jul 27, 2022
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Feb 14, 2019
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 12, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Press Release 2022
Press Release 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Press Release 2018
Preliminary Economic Assessment 2012
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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