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Sweden
Garpenberg Mine

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 Location:
45 km SE from Falun, Sweden

  Address:
Kaspersbo 20
Garpenberg
Sweden
776-98
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  • Overview
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Silver
  • Lead
  • Copper
  • Gold
Mining Method
  • Cut & Fill
  • Sub-level stoping
  • Avoca
  • Backfill
Production Start...
Mine Life2049
Garpenberg – the world’s most productive underground zinc mine.


Owners

Source: p. 9
CompanyInterestOwnership
Boliden AB 100 % Indirect
Boliden Mineral AB (operator) 100 % Direct
Boliden Mineral AB owns 100 % of the Garpenberg mine.

Contractors

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Deposit Type

  • Stratabound


Summary:

The Garpenberg mine is situated in the mineralized Palaeoproterozoic igneous province of Bergslagen, south central Sweden, which is host to a variety of ore deposits, and especially Fe-oxide and polymetallic sulphide deposits. Garpenberg, which is the largest sulphide deposit in the region, consists of several individual ore bodies distributed over a distance of 4 km within the Garpenberg supracrustal inlier, see Figure 3-3. The main host rock to the ore is calcitic marble (limestone) altered to dolomite and Mg +/- Mn-rich skarns. The footwall consists of rhyolitic pumiceous, graded massflow breccia and rhyolitic ash-siltstone and sandstone affected by strong phlogopite-biotitecordierite-sericite-quartz alteration. The hanging wall includes polymict conglomerates and rhyolitic pumiceous breccias. The stratigraphic succession is attributed to the volcanic cycle of a felsic caldera complex. The pumiceous breccias in the hanging-wall record a climactic eruption that formed a caldera over 500 m deep and over 9 km in diameter in the Garpenberg area. The limestone horizon is interpreted as a stromatolitic carbonate platform, formed in a shallow, marine environment during a hiatus in volcanism.

The Garpenberg inlier has been interpreted as a NE-SW trending, tight to isoclinal complex syncline with a sub-vertical axial plane (Allen et al., 2003). The structure is compressed at the southern end and opens to the north. The ore-host limestone shows a complex geometry due to l ........


Mining Methods

  • Cut & Fill
  • Sub-level stoping
  • Avoca
  • Backfill


Summary:

Garpenberg is a Zn-Pb-Ag-(Cu-Au) underground mine where the ore is mined from between 450 meters to more than 1 400 meters below surface. The mine encompasses several polymetallic ore bodies. Almost 80 % of the mined tonnage derives from the largest ore body, Lappberget. Almost 90% of the mined ore in Garpenberg is extracted by sublevel stoping (also called longhole stoping), where the ore is mined in layers between two drifts vertically 25 m apart. Most areas are mined with transversal longhole stoping, where the development and stope axis are perpendicular to the strike of the orebody. In some more narrow areas, longitudinal longhole stoping is used. The orientation of this method is along or parallel to the strike of the orebody. The ore body is split into primary and secondary stopes, which are mined in a predefined order and pyramid shape sequence. The standard stope dimensions are 24 - 25m high, 10 m wide for primary stopes and 15 m wide for secondary stopes. In general, the ore bodies are divided in mining blocks with 6 levels of stopes in each block. The last level of each mining block is the sill pillar, which separates the different mining blocks. This division allows the mine to have several production areas being scheduled and mined at the same time. Another consideration that was recently introduced concerning the mine design of Lappberget is the division into a main and a second pass sequence (2pass). The main sequence contains more of the high-grade areas an ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits2021202020192018201720162015
Zinc Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required101107109108
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required191201200196
Silver Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required2,861 kt2,622 kt2,634 kt2,622 kt
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Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven 7,700 kt Zinc 3.3 %
Proven 7,700 kt Silver 135 g/t
Proven 7,700 kt Lead 1.2 %
Proven 7,700 kt Copper 0.03 %
Proven 7,700 kt Gold 0.18 g/t
Probable 86,000 kt Zinc 2.8 %
Probable 86,000 kt Silver 90 g/t
Probable 86,000 kt Lead 1.3 %
Probable 86,000 kt Copper 0.05 %
Probable 86,000 kt Gold 0.32 g/t
Measured 70 kt Zinc 2.8 %
Measured 70 kt Silver 108 g/t
Measured 70 kt Lead 1 %
Measured 70 kt Copper 0.03 %
Measured 70 kt Gold 0.24 g/t
Indicated 30,500 kt Zinc 2.6 %
Indicated 30,500 kt Silver 83 g/t
Indicated 30,500 kt Lead 1.3 %
Indicated 30,500 kt Copper 0.06 %
Indicated 30,500 kt Gold 0.4 g/t
Inferred 48,400 kt Zinc 2.3 %
Inferred 48,400 kt Silver 50 g/t
Inferred 48,400 kt Lead 1.1 %
Inferred 48,400 kt Copper 0.06 %
Inferred 48,400 kt Gold 0.35 g/t

Commodity Production Costs:

CommodityUnits202120202019201820172016
C1 cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.47 / lb   0.46 / lb   0.43 / lb  
Subscription required - Subscription is required.

Financials:

Units202120202019201820172016
Capital expenditures M SEK  ......  Subscription required  ......  Subscription required  ......  Subscription required 395   377   317  
Revenue M SEK  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,700   4,019   3,491  
Operating Income M SEK  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,225   2,606   2,063  
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2017:
HME TypeModelQuantity
Cable bolter ....................... Subscription required ....................... Subscription required
Drill ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Rock bolter ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 8, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... 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
Quarterly Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Fact Sheet 2017
Other 2009
Subscription required - Subscription is required.

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