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Sweden
Zinkgruvan Mine

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 Location:
177 km SW from Stockholm, Sweden

  Address:
Centrumvägen 1,
Zinkgruvan
Sweden
696 81
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
Mining Method
  • Bench & Fill
  • Sub-level open stoping (SLOS)
  • Avoca
  • Paste backfill
Production Start...
Mine Life10 years (as of Jan 1, 2022)
The Zinkgruvan Mine comprises a deep underground mine, a processing plant and associated infrastructure and tailings disposal facilities.


Owners

Source: p. 87
CompanyInterestOwnership
Lundin Mining Corp. 100 % Indirect
Zinkgruvan Mining AB (operator) 100 % Direct
The Zinkgruvan Mine is owned and operated by Zinkgruvan Mining AB which is a 100% indirect subsidiary of Lundin Mining.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork
  • Hydrothermal


Summary:

The Zinkgruvan deposit comprises a stratiform, massive zinc-lead deposit hosted by K-rich metatuffites with intercalated beds of marble, dolomite and fine grained quartzite. A zone of stratified disseminated pyrrhotite mineralisation occurs 100m stratigraphically above the zinc-lead mineralisation while in the central part of the deposit the zinc-lead mineralisation is stratigraphically underlain by a substratiform copper stockwork.

The deposit exhibits distinctive stratification and extends for more than 5km along strike and to depths of 1,600m. Deformation during the Svecofennian orogeny included isoclinal folding which has resulted in the stratigraphy of the area being overturned. The property geology is also divided into two distinct areas by the regional northnortheast to south-southwest trending Knalla fault. These areas, which make up the Zinkgruvan deposit, are known as Nygruvan area and Knalla area. The Nygruvan area is bounded to the east by the Sinsberg fault beyond which felsic metavolcanics and early orogenic granites are encountered. The Knalla area is bounded to the west by the Dalby fault beyond which post-orogenic granites are encountered.

The Nygruvan and Knalla areas of the Zinkgruvan deposit are located on both flanks of a synclinal structure and separated by the Knalla fault. The Nygruvan area is located to the east of the Knalla fault and provided the majority of the historical production at Zinkgruvan. The Nygruvan area strikes ge ........


Mining Methods

  • Bench & Fill
  • Sub-level open stoping (SLOS)
  • Avoca
  • Paste backfill


Summary:

Mine access is currently via three shafts, with the principal P2 shaft providing ore and waste rock hoisting as well as labour access to the -800m and -850m levels. The “daylight” ramp connects the surface and the underground working the “western areas”, providing direct vehicle access from surface to the mine. A system of further ramps is employed to access and hence exploit mineral reserve below the shaft. The mine is highly mechanised, utilising the best available technologies to control operations. Longhole panel and sub level bench stoping are emloyed throughout the mine. All stopes are backfilled with either cemented paste tailings or waste rock. Mining has currently reached the -1,250m level.

There are four excavation or stoping methods utilised at the Zinkgruvan mine, transverse bench and fill, sub level open stoping (“SLOS”) mining, a modified Avoca mining method and underhand bench and fill (in this case the term underhand refers to the mining sequence not stope drilling orientation).

Transverse Bench and Fill (Panel Mining)
In the Burkland zone, long hole transverse bench and fill stoping (locally known as panel mining) is used with a sequence of primary and secondary stopes. Stope dimensions are nominally 20m high by 30m wide for the primary stopes and 20m wide for the secondary stopes. Stope access is typically developed in the footwall from the ramp system with this development at 5m x 5m size. Stope accesses are developed on the upper ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits2023202220212020201920182017
Zinc t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required76,60677,963
Copper t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,320 kt1,300 kt1,281 kt
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required1,298 kt1,313 kt1,264 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1.7 Mt1.7 Mt1.7 Mt
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Reserves at December 31, 2022:
The zinc Mineral Resources are estimated within optimized stope volumes, using a 3.5 m minimum mining width, based on an area dependent marginal NSR cut-off between SEK 515/t and SEK 710/t.

The zinc and copper Mineral Reserves are estimated at NSR cut-off values ranging from SEK 750/t to SEK 950/t NSR.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable Zinc 9,304 kt Zinc 7.9 % 739 kt
Proven & Probable Zinc 9,304 kt Lead 3.3 % 306 kt
Proven & Probable Copper 1,683 kt Copper 2.2 % 37 kt
Proven & Probable Zinc 9,304 kt Silver 69 g/t 20,596 koz
Proven & Probable Copper 1,683 kt Silver 34 g/t 1,818 koz
Measured & Indicated Zinc 17,764 kt Zinc 8.1 % 1,439 kt
Measured & Indicated Zinc 17,764 kt Lead 3.3 % 592 kt
Measured & Indicated Copper 3,781 kt Copper 2.1 % 81 kt
Measured & Indicated Copper 3,781 kt Silver 34 g/t 4,133 koz
Measured & Indicated Zinc 17,764 kt Silver 69 g/t 39,408 koz
Inferred Zinc 17,626 kt Zinc 8.3 % 1,471 kt
Inferred Zinc 17,626 kt Lead 4 % 710 kt
Inferred Copper 261 kt Copper 1.7 % 4 kt
Inferred Copper 261 kt Silver 27 g/t 227 koz
Inferred Zinc 17,626 kt Silver 91 g/t 51,569 koz

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Credits (by-product) Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -0.44 / lb   -0.49 / lb  
Cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.78 / lb   0.8 / lb  
Cash costs Zinc USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 0.34 / lb†   0.31 / lb†  
All-in sustaining costs (AISC) Zinc USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 0.62 / lb†   0.57 / lb†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 38   42.9  
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 38   36.9  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 216.7   241.8  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 100.5  
Operating Income M USD 157.1  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 76.6   91.3  
Subscription required - Subscription is required


Pipelines and Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment:
HME TypeModelQuantityLeased or
Contractor
Ref. Date
Cable bolter ....................... Subscription required ....................... Subscription required Nov 30, 2017
Drill ....................... Subscription required ....................... Subscription required Nov 30, 2017
Drill ....................... Subscription required ....................... Subscription required Nov 30, 2017
Drill ....................... Subscription required Jan 20, 2022
Excavator ....................... Subscription required ....................... Subscription required Nov 30, 2017
Excavator ....................... Subscription required ....................... Subscription required Nov 30, 2017
Loader (FEL) ....................... Subscription required ....................... Subscription required Nov 30, 2017
Loader (FEL) ....................... Subscription required ....................... Subscription required Leased Nov 30, 2017
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Nov 30, 2017
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Nov 30, 2017
Rock bolter ....................... Subscription required ....................... Subscription required Nov 30, 2017
Scaler ....................... Subscription required ....................... Subscription required Nov 30, 2017
Scraper ....................... Subscription required ....................... Subscription required Nov 30, 2017
Truck (haul) ....................... Subscription required ....................... Subscription required Leased Nov 30, 2017
Truck (haul) ....................... Subscription required ....................... Subscription required Nov 30, 2017
Truck (haul) ....................... Subscription required ....................... Subscription required Nov 30, 2017
Truck (water) ....................... Subscription required ....................... Subscription required Leased Nov 30, 2017
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 1, 2023
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Annual Information Form 2022
Management Discussion & Analysis 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Management Discussion & Analysis 2018
Press Release 2018
Sustainability Report 2018
Year-end Mineral Reserves 2018
Sustainability Report 2017
Technical Report 2017
Year-end Mineral Reserves 2017
Annual Information Form 2016
Management Discussion & Analysis 2016
Sustainability Report 2016
Year-end Mineral Reserves 2016
Annual Information Form 2015
Annual Report 2015
Management Discussion & Analysis 2015
Technical Report 2013
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