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Canada
Manitoba(Snow Lake) Operation (777 Mine, Lalor Mine, Reed Mine)

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 Location:
8 km W from Snow Lake, Manitoba, Canada
  Address:
Suite 800 - 25 York Street
Toronto
Ontario, Canada
M5J2V5
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Zinc
  • Gold
  • Silver
  • Gold Equivalent
Mining Method
  • Mechanized Cut & Fill
  • Post Pillar Cut & Fill
  • Longhole open stoping
  • Longitudinal retreat
  • Room-and-pillar
  • Paste backfill
Production Start...
Mine Life2038
In addition to 100% owned Lalor mine in northern Manitoba(Snow Lake operations), Company own and operate a portfolio of processing facilities, including Stall concentrator, which produces zinc and copper concentrates, and recently refurbished New Britannia mill, which produces copper concentrate and gold/silver doré. Flin Flon concentrator, which produced zinc and copper concentrates, closed in 2022 and is currently on care and maintenance. Also Company own a number of properties in the Snow Lake region within trucking distance of the Stall and New Britannia mills that have the potential to provide additional feed for our Snow Lake operations.

Snow Lake operations in produce gold with copper, zinc and silver by-products.

Owners

Source: p. 7, 69
CompanyInterestOwnership
Hudbay Minerals Inc. 100 % Direct

Contractors

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Deposit Type

  • Footwall hosted
  • Orogenic
  • VMS
  • Vein / narrow vein
  • Hydrothermal

Summary:

The deposits of interest in this Technical Report are classified as VMS (volcanogenic massive sulphides). VMS deposits are an important source of copper, zinc, lead, gold and silver (Cu, Zn, Pb. Au and Ag) and form at or near the seafloor where circulating hydrothermal fluids driven by magmatic heat that have quenched through mixing with bottom waters or porewaters in near-seafloor lithologies. Massive sulfide lenses vary widely in shape and size and may be podlike or sheetlike. The location of VMS deposits is often controlled by synvolcanic faults and fissures, which permit a focused discharge of hydrothermal fluids. Massive sulphide ore in VMS deposits consists of usually more than 40 percent sulfides, dominated by pyrite, pyrrhotite, chalcopyrite, sphalerite, and galena. Non-sulfide gangue typically consists of quartz, barite, anhydrite, iron (Fe) oxides, chlorite, sericite, talc, and their metamorphosed equivalents. Sulphide ore composition may vary from Pb-Zn- to Cu-Zn-, or Pb-Cu-Zn-dominated, and some deposits are zoned vertically and laterally. VMS deposits have stringer or feeder zones beneath the massive zone that consist of crosscutting veins and veinlets of sulfides in a matrix of pervasively altered host rock.

Lalor Mine and 1901 Deposit
The mineralized envelopes are shallow dipping, with zinc mineralization defined to date beginning at approximately 600 m from surface and extending to a depth of approximately 1,100 m. The mineralization trends abo ........

Mining Methods

  • Mechanized Cut & Fill
  • Post Pillar Cut & Fill
  • Longhole open stoping
  • Longitudinal retreat
  • Room-and-pillar
  • Paste backfill

Summary:

The two mining methods used at Lalor mine, 1901 deposit and the Snow Lake satellite deposits are variations of cut and fill mining or longhole open stope mining. In general, where the dip exceeds 35° and the orebody is of sufficient thickness, longhole open stope mining is preferred, whereas cut and fill mining methods are used in narrower, flatter areas. At Lalor, longhole mining represents 87% of total stope mining, and stope mining accounts for 92% of all mining, with development accounting for the other 8%.

Single pass overhand mechanized cut and fill mining is the preferred method where the ore is flatter than 35° and horizontal widths are less than 10m. The ore is accessed from a footwall drift by a crosscut developed at approximately -15%. Ore is mined in 5m high horizontal cuts. Unconsolidated backfill is placed tight to the back and the entrance crosscut is then back slashed to provide access to the next cut. Where ore widths are greater than 14m wide, mining is conducted by overhand post pillar cut and fill. Post pillars provide ground support to allow for selective mining of wide stopes. Backfill is placed to within 1.8m of the back and the entrance crosscut is back slashed to provide access to the next cut. Drifts and crosscuts in stopes are typically 7m wide x 5m high, with 7m x 7m post pillars. Mining retreats towards the access to reduce risks associated with poor ground conditions.

Benefits of longhole mining over cut and fill methods inc ........

Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits2023202220212020201920182017
Copper Metal in concentrate t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required32,37237,411
Zinc Metal in concentrate t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in conc./ doré oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Silver Metal in conc./ doré oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Gold Metal in doré oz  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in doré oz  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Equivalent Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,646,562 t2,553,171 t2,768,200 t
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required2,652,306 t2,625,210 t2,704,722 t
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Reserves at January 1, 2023:
Lalor mineral reserves and resources are estimated using NSR cut-off ranging from C$137 to C$168 per tonne. 1901 mineral reserves and resources are estimated using a minimum NSR cut-off of C$166 per tonne. WIM mineral reserves are estimated using a minimum NSR cut-off of C$150 per tonne. 3 Zone mineral reserves are estimated using a minimum NSR cut-off of C$150 per tonne. Watts mineral resources are estimated using a minimum NSR cut-off of C$150 per tonne. Pen II mineral resources are estimated using a minimum NSR cut-off of C$75 per tonne.

CategoryTonnage CommodityGrade
Proven & Probable 18,413 kt Copper 0.72 %
Proven & Probable 18,413 kt Zinc 2.79 %
Proven & Probable 18,413 kt Gold 3.53 g/t
Proven & Probable 18,413 kt Silver 23.95 g/t
Indicated 2,660 kt Copper 2.01 %
Indicated 2,660 kt Zinc 3.04 %
Indicated 2,660 kt Gold 1.8 g/t
Indicated 2,660 kt Silver 30.9 g/t
Inferred 13,352 kt Copper 1.39 %
Inferred 13,352 kt Zinc 2.09 %
Inferred 16,672 kt Gold 3.22 g/t
Inferred 13,352 kt Silver 26.99 g/t

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Credits (by-product) Gold USD  ......  Subscription required
Cash costs Gold USD  ......  Subscription required
Credits (by-product) Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.23 / lb   -1.21 / lb  
Cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.68 / lb   1.41 / lb  
Credits (by-product) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -6.65 / lb   -5.7 / lb  
Cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 6.01 / lb   5.11 / lb  
Cash costs Gold USD  ......  Subscription required ^†  ......  Subscription required†
Cash costs Copper USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† -0.64 / lb†   -0.59 / lb†  
Cash costs Zinc USD  ......  Subscription required†  ......  Subscription required† 0.46 / lb†   0.2 / lb†  
^ Guidance / Forecast.
† Net of By-Product.
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Operating Costs:

Units20222021202020192018201720162015
UG mining costs ($/t mined) CAD 124.8105.4690.393.887.174.957.566.2
Total operating costs ($/t milled) CAD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 104.4   58.6  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 122.5   98.4  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 133  
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Pipelines and Water Supply
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
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Staff:

EmployeesYear
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Information Form 2022
Financial Review 2022
Management Discussion & Analysis 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Management Discussion & Analysis 2018
Financial Review 2017
Financial Review 2017
Management Discussion & Analysis 2017
Technical Report 2017
Management Discussion & Analysis 2016
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