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

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 Location:
Flin Flon, 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 Life2037
Hudbay intends to cease operations and put the zinc plant and the Flin Flon mill on care and maintenance at the end of Q2 2022, when Hudbay’s 777 mine closes.

In 2021, Hudbay signed a multiyear agreement with the Royal Canadian Mint to refine precious metal doré production from our recently refurbished New Britannia mill. The New Britannia mill achieved commercial production on November 30, 2021 after reaching the required recoveries and throughput in the copper and gold circuits. The New Britannia mill is expected to average 1,500 tonnes per day in 2022.


Owners

Source: p. 7, 70
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:

CommodityProductUnits2022202120202019201820172016
Copper Metal in concentrate t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required32,37237,41141,059
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
Silver Metal in conc./ doré oz  ......  Subscription required ^  ......  Subscription required
Gold Metal in doré oz  ......  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
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  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required2,646,562 t2,553,171 t2,768,200 t2,827,752 t
Tonnes milled  ......  Subscription required  ......  Subscription required2,652,306 t2,625,210 t2,704,722 t2,854,255 t
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Reserves at January 1, 2021:
Lalor mineral resources are estimated using a minimum NSR cut-off of C$117 per tonne for waste filled mining areas and a minimum of C$127 per tonne for paste filled mining areas. 1901 mineral resources are estimated using a minimum NSR cut-off of C$110 per tonne. New Britannia mineral resource estimates have been reported at a cut-off grade varying from 2 grams per tonne (at the lower part of New Britannia) to 3.5 grams per tonne (at the upper part of New Britannia). 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.
Lalor mineral reserves are estimated using a minimum NSR cut-off of C$117 per tonne for waste filled mining areas and a minimum of C$127 per tonne for paste filled mining areas. 1901 mineral reserves are NSR cut-off of C$110 per tonne. WIM mineral reserves are NSR cut-off of C$150 per tonne. 3 Zone are minimum NSR cut-off of C$150 per tonne.

CategoryTonnage CommodityGrade
Proven & Probable 21,834 kt Copper 0.8 %
Proven & Probable 21,834 kt Zinc 3.27 %
Proven & Probable 21,834 kt Gold 3.46 g/t
Proven & Probable 21,834 kt Silver 25.56 g/t
Measured & Indicated 2,870 kt Copper 1.97 %
Measured & Indicated 2,870 kt Zinc 3.27 %
Measured & Indicated 2,870 kt Gold 1.82 g/t
Measured & Indicated 2,870 kt Silver 31.2 g/t
Inferred 16,040 kt Copper 1.09 %
Inferred 16,040 kt Zinc 1.24 %
Inferred 16,040 kt Gold 3.36 g/t
Inferred 16,040 kt Silver 22.83 g/t

Commodity Production Costs:

CommodityUnits202120202019201820172016
Credits (by-product) Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.23 / lb   -1.21 / lb   -1.1 / lb  
Cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.68 / lb   1.41 / lb   1.43 / lb  
Credits (by-product) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -6.65 / lb   -5.7 / lb   -3.44 / lb  
Cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 6.01 / lb   5.11 / lb   3.85 / lb  
Cash costs Copper USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† -0.64 / lb†   -0.59 / lb†   0.41 / lb†  
Cash costs Zinc USD  ......  Subscription required†  ......  Subscription required† 0.46 / lb†   0.2 / lb†   0.32 / lb†  
† Net of By-Product.
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Operating Costs:

Units2021202020192018201720162015
UG mining costs ($/t mined) CAD 105.4690.393.887.174.957.566.2
Total operating costs ($/t milled) CAD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 104.4   58.6   60  
Growth Capital M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 122.5   98.4  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 133  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2022
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Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019

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 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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