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Canada
Eagle Gold Mine

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 Location:
47 km N from Mayo, Yukon, Canada

  Regional Office:
Suite 250 - 2237 2nd Avenue
Whitehorse
Yukon, Canada
Y1A 0K7
Phone  ...  Subscription required
Fax+1-867-393-4654
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Smelting
  • Filter press plant
  • Carbon re-activation kiln
  • Heap leach
  • Carbon in column (CIC)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life11.5 years (as of Jan 1, 2021)
The Company has initiated ‘Project 250’ aimed at increasing the average annual gold production of the Eagle Gold Mine toward 250,000 ounces of gold during 2023. The two primary opportunities to increase production are the scalping of fine ore from the crushing circuit and adjusting the seasonal stacking plan.

Scalping of fine ore is expected to reduce wear and energy requirements as well as increase overall capacity of the crushing circuit. Detailed engineering and procurement of equipment is underway to enable construction to start in H2 2022 to benefit 2023 production.
Latest NewsVictoria Gold: 2021 Fourth Quarter And Full Year 2021 Results     March 24, 2022


Owners

Source: p. 11
CompanyInterestOwnership
Victoria Gold Corp. 100 % Indirect
The Mine is situated within the Dublin Gulch property, which is a contiguous block of 1,914 quartz claims, 10 quartz leases, and one federal crown grant all of which are under the control of Victoria Gold’s wholly owned, directly held subsidiary Victoria Gold (Yukon) Corp. (formerly StrataGold Corporation).

Deposit Type

  • Vein / narrow vein
  • Intrusion related


Summary:

The Dublin Gulch property (Eagle Gold Mine) is underlain by upper Proterozoic to lower Paleozoic clastic sedimentary rocks that have undergone regional deformation including Cretaceous age thrust faulting and subsequent granitoid intrusions. Mineralization is associated with granitic intrusive bodies, here described as the Eagle Zone and Olive Zone gold deposits, which are hosted primarily in granodioritic rocks. The gold deposits occur within the Tombstone Gold Belt, located in the eastern portion of the Tintina Gold Province, which also hosts the Brewery Creek deposit and other gold occurrences in the Yukon.

The property is located on the northern limb of the McQuesten Antiform and is underlain by Proterozoic to Lower Cambrian-age Hyland Group metasediments and the Dublin Gulch intrusion, a granodioritic stock. The Dublin Gulch Stock is comprised of four intrusive rock phases, the most significant of which is Granodiorite. The stock has been dated at approximately 93 Mega annum (Ma).

The metasediments are the product of greenschist-grade regional metamorphism. Proximal to the Dublin Gulch Stock, these metasediments have undergone metasomatism and contact metamorphism. A hornfelsic thermal halo surrounds the stock and within the halo, the metasediments have been altered to schist, marble and skarn.

The Eagle and Olive zones belong to the RIRGS class (Reduced Intrusion-Related Gold Systems) of mineral deposits.

The Eagle Zone gold occurrence is localized at the narrowest exposed portion of the stock. The Eagle Zone mineralization is comprised of sub-parallel extensional quartz veins that are best developed within the granodiorite.

Sulphides account for less than 5% of vein material and occur in the centre, on the margin, and disseminated throughout the veins. The most common sulphide minerals are pyrrhotite, pyrite, arsenopyrite, chalcopyrite, sphalerite, bismuthinite, molybdenite and galena. Secondary potassium feldspar is the dominant mineral in alteration envelopes. Sericite-carbonate is generally restricted to narrow vein selvedges, although alteration zones of this type also occur with no obvious relation to veins. Gold mineralization also occurs within the metasedimentary rock package immediately adjacent to the granodiorite.

The Eagle Zone is the principal concentration of mineralization within the property. The Eagle Zone is irregular in plan and is approximately 1,600 m long (east-west) and 600 m wide north-south. The Eagle Zone is near-vertical and has been traced for about 500 m below surface. Current drilling indicates that the mineralization is relatively continuous along this length and is open in several directions, including at depth. Mineralization occurs as elemental gold, both as isolated grains and most commonly in association with arsenopyrite, and less commonly with pyrite and chalcopyrite. The sulphide content in the veins is typically less than 5%, and is less than 0.5% within the deposit overall, with 1 to 4% carbonate (calcite) present.

The Olive Zone gold occurrence is localized at the contact zone on the northwest flank of the granodiorite intrusive and located 2.5 km northeast of the Eagle Zone. Olive measures approximately 20 to 80 m in width, 900 m in length, and has been drilled to approximately 175 to 250 m in depth. Over 97% of the gold mineralization in the Olive Zone is hosted in granodiorite.

Compared to Eagle, the Olive mineralization is more associated with sulphides and quartz-sulphide veining in an interpreted shear-zone setting. An oxidation zone and a transition zone, from near total oxidation to only sulphides, have been defined. Veins can be only sulphides or sulphides with white quartz. Pyrite plus arsenopyrite (or arsenical pyrite) and quartz-pyrite veins are common, within the overall NE trending zone of mineralization.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Eagle Gold Mine comprises the Eagle and Olive deposits which are mined using open pit methods.

Open pit mining will focus on the various Eagle pit phases with the smaller Olive pit coming into production in 2028.

- Year 2019: Completed pre-stripping the Eagle pit and transitioned into production phase.
- Year 2020: First year of full production with heap leach stacking and processing after preproduction and ramp up period have completed.
- Year 2021: Mining in Eagle Phase 1 and 2 will continue with waste stripping of Phase 3 commencing.
- Years 2022-2024: Mining at the Eagle Phase 1 be completed in late 2022, with Phase 2 ending in 2024, while Phase 3 continues over the entire period. ROM material is expected to start hauling to the secondary HLP at the start of 2024.
- Years 2025 to 2027: The primary HLP is expected to reach the crush ore capacity in 2027 and remainder of crush ore is conveyed to the secondary HLP near the Olive deposit.
- Years 2028 to 2031: Mining at Eagle Phase 3 is completed in 2030. The Olive open pit commences in 2028 and is completed at the middle of 2031.

The open pits are designed with 10 m benches in both waste and ore headings with adequate phase geometry to achieve a maximum production rate of 31M t/year. Mining is scheduled to advance sequentially through the pits and various internal phases with several phases active at any one time. Given the required production rate and pit geometries, vertical advance rates average eight benches per year, with frequent requirement for ramp development and opening of new benches.

Based on the selected bench height (drilling occurs on 10 m high benches) and the production schedule requirements, a production drill with a 190 mm hole diameter was selected for both waste and ore. The blast design assumes the use of a 65% ANFO / 35% Emulsion blend for dry holes, and a 30% ANFO / 70% Emulsion blend for wet holes. Given the climatic conditions of the project area, 20% wet blast holes were assumed.

Diesel hydraulic excavators were selected as the primary loading equipment, supported by front-end loaders (FEL) and a smaller hydraulic backhoe. The main criterion for loading equipment selection is the ability to effectively load trucks with payloads of 136 t, while allowing for somewhat selective mining. As such, front shovels with a 22 m3 bucket primarily undertake the mining of ore and waste material, while the 12 m3 FELs and smaller excavator complement the main shovel fleet (e.g. lower, confined benches of the open pits).

The truck fleet for the project was selected to match the selected loading fleet, and resulted in the final selection of CAT 785 trucks with a payload of 136 t.

Waste rock material produced from the Eagle and Olive pits was divided into three categories:
- Metasedimentary - Rock which is highly weathered and foliated and generally shows poor mechanical properties.
- Intrusive - Rock exhibiting a similar weathering pattern as the metasedimentary but has a noticeably higher inherent strength and a higher structural integrity.
- Miscellaneous -Includes topsoil (thickness from 0.2 to 0.5 m) and colluvium (thickness from 2 to 7 m).

Eagle waste rock will be hauled to one of two waste rock storage areas immediately to the south (Platinum Gulch WRSA) and north (Eagle Pup WRSA) of the open pit which results in short haul distances. Olive waste rock will be hauled to a waste rock storage area immediately south-west of the open pit (Olive WRSA).


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Gyratory crusher ....................... Subscription required 375 kW 1
Cone crusher ....................... Subscription required 932 kW 4

Summary:

Crushing and Ore Handling
• Primary crusher: a gyratory crusher with a stationary rock breaker in open circuit, producing a final product P80 of approximately 115 mm;
• Secondary crusher: a vibrating screen and cone crusher operating in open circuit, producing a final product P80 of approximately 21 mm;
• Tertiary crushers: three vibrating screens and three cone crushers operating in reverse closed circuit, producing a final product P80 of 6.5 mm, and;
• Heap placement: crushed material is conveyed to the HLP by overland conveyor.

ROM ore is trucked from the open pits and dumped directly into a primary feed hopper. The primary crusher, a 375-kW gyratory crusher, crushes ROM material from a maximum feed size of 1,000 mm down to a P80 of approximately 115 mm.

The primary crushing plant is designed to operate 365 days per year at a rate of 29,500 t/d. During the winter months, January to March, the crushed material will be conveyed and stacked on the winter stockpile. Between April, up to the end of December, the primary crusher product is fed directly onto the secondary crushing feed conveyor. The material from the winter stockpile is reclaimed at a rate of 470 t/h by front-end loader (FEL), and conveyed to the secondary crushing feed conveyor for a combined feed of 39,200 t/d.

If the crushing plant is down, the mine haul trucks dump onto the ROM stockpile. A FEL will be used to reclaim the ROM material and deliver the material to the dump pocket. The ROM stockpile can also be used to feed the crusher, if the mining operations are suspended.

Ore from the secondary crushing feed conveyor is transported to the secondary vibrating double deck screen. Screened undersize material is conveyed to the tertiary crushing feed conveyor. The screened oversize feeds the 932-kW secondary cone crusher. The secondary cone crusher product discharges onto the tertiary crushing feed conveyor.

Ore from the tertiary crushing feed conveyor is transported to the tertiary ore stockpile. The material from the stockpile is reclaimed by belt feeders to three tertiary vibrating double deck screens. The oversize material from the screens feeds the tertiary crushers, each installed with 932 kW motors. The crusher product returns to the tertiary crusher feed conveyor. The undersize material, with a target P80 of 6.5 mm, is transferred by overland conveyors to the HLP for stacking, by a series of grasshoppers that feed a radial stacker.

Lime is added to the stockpile feed conveyor from the 200-t lime silo by screw conveyor for pH control, at a rate of 1 kg/t to 1.5 kg/t.


Processing

  • Smelting
  • Filter press plant
  • Carbon re-activation kiln
  • Heap leach
  • Carbon in column (CIC)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The gold recovery process was designed on the basis of leaching approximately 13M t of ore per year with an average gold head grade of 0.64 g/t (ROM and crushed ore combined) at an overall gold recovery of 77%.

The three-stage crushing plant operates at a nominal primary crushing rate of 29,500 t/d, 365 days per year and a secondary and tertiary crushing rate of 39,200 t/d, 275 days per year. During the coldest part of the year (January through March), fine crushing and HLP loading activities are suspended. Barren solution, made up of a cyanide-caustic mixture, is pumped at a nominal rate of 2,070 m3 /h to a network of supply piping and drip emitters on the HLPs. Pregnant solution is collected in a sump near the bottom of the HLPs and pumped to the 8 t/d carbon ADR plant for gold extraction and the production of gold doré.

The gold ore processing facilities include the following unit operations:

Heap Leach Pad
• Crushed ore stacking and spreadin ........

Recoveries & Grades:

CommodityParameter202120202019
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required  ......  Subscription required

Production:
On September 9, 2019, the Victoria Gold Corp. provided an update on the Eagle Gold project’s transition to an operating mine.

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

Operational Metrics:

Metrics202120202019
Total tonnes mined  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required2,644,000 t
Waste  ......  Subscription required  ......  Subscription required2,153,000 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required
Daily mining rate  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required2,585,000 t
Daily processing rate  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Resources are estimated at a cut-off of 0.15 g/t Au for Eagle and 0.40 g/t Au for Olive.

CategoryTonnage CommodityGradeContained Metal
Proven 25 Mt Gold 0.69 g/t 557 koz
Probable 108 Mt Gold 0.62 g/t 2,145 koz
Proven & Probable 133 Mt Gold 0.65 g/t 2,702 koz
Measured 33 Mt Gold 0.69 g/t 729 koz
Indicated 175 Mt Gold 0.62 g/t 3,463 koz
Measured & Indicated 207 Mt Gold 0.63 g/t 4,192 koz
Inferred 28 Mt Gold 0.63 g/t 571 koz

Commodity Production Costs:

CommodityUnits20212020
Cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units202220212020
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M  ......  Subscription required
Sustaining costs M  ......  Subscription required  ......  Subscription required
Capital expenditures M  ......  Subscription required
Revenue M  ......  Subscription required  ......  Subscription required
Operating Income M  ......  Subscription required  ......  Subscription required
Gross profit 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
Operating Cash Flow M  ......  Subscription required
Subscription required - Subscription is required


Proposed Heavy Mobile Equipment as of December 6, 2019:
HME TypeModelSizeQuantity
Dozer (crawler) ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 4, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... 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
Corporate Presentation 2018
Press Release 2018
Feasibility Study Report 2016
Subscription required - Subscription is required.

News:

NewsDate
Victoria Gold: 2021 Fourth Quarter And Full Year 2021 Results March 24, 2022
Victoria Gold Provides Update on ‘Project 250’ January 17, 2022
Victoria Gold: Eagle Gold Mine Q4 And Annual 2021 Production Results January 6, 2022
Victoria Gold Drills High Grade; 2.77 g/t Au over 65.7 meters and Expands Raven to over 750 meters in Strike Length October 19, 2020
Happy Canada Day – Victoria Gold Declares Commercial Production at the Eagle Gold Mine, Yukon, Canada July 1, 2020
Victoria Gold: Trench Results Expand Raven Zone and Eagle Gold Mine Technical Report Filed December 9, 2019
Victoria Gold: Eagle Gold Mine Reserves Increase by 20% to 3.3 Million Ounces Gold December 4, 2019
Victoria Gold: Eagle Mine’s First Gold Pour Completed on Tuesday, September 17, 2019 September 18, 2019
Victoria Gold: Eagle Mine’s Live First Gold Pour on Tuesday, September 17, 2019 September 13, 2019
Victoria’s Eagle Gold Mine Construction Complete – Operations Ramping Up September 9, 2019
Victoria Gold’s Eagle Mine Nearing Operations June 4, 2019
Victoria Gold: Eagle Mine Construction Update, Dublin Gulch, Yukon May 7, 2019
Victoria Gold Achieves Major Safety Milestone March 18, 2019
Victoria Gold: Eagle Mine Construction Update, Dublin Gulch, Yukon February 25, 2019
Victoria Gold Reports Final 2018 Dublin Gulch Drill Results January 17, 2019
Victoria Gold: Eagle Mine Construction is 60% Complete December 4, 2018

Aerial view:

Subscription required - Subscription is required.

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