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Sweden
Malmberget Mine

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 Location:
5 km N from Gällivare, Sweden

  Address:
Kullevägen 5
LKAB Malmberget
Malmberget
Sweden
SE-983 81
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Iron Ore
Mining Method
  • Sub-level caving
Production Start...
Mine Life2040
Malmberget is one of the world's largest underground mines for iron ore production.


Owners

Source: p. 2
CompanyInterestOwnership
Luossavaara-Kiirunavaara AB (LKAB) 100 % Indirect
LKAB is a limited liability company that is wholly owned by the Swedish state.

Contractors

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Deposit Type

  • Kiruna-type
  • Metamorphic


Summary:

The ore deposit in Malmberget includes 21 ore bodies of various size and shape. They are spread out over an area of 5 kilometers in the W-E direction and 2,5 kilometers in the N-S direction. The ore bodies in the western field inherit 90-95% magnetite and 5-10% hematite while the ore bodies in the eastern field is constituted of almost 100% magnetite (International Mining, 2014).

The most frequently occurring polluting minerals are apatite, amphibolite, pyroxene and biotite and the ore bodies are commonly surrounded by breccia or skarn breccia types. The host rocks inherits a felsic to mafic composition and are usually called leptites in the Malmberget area. The Malmberget deposit is stronger metamorphosed and deformed than the Kiirunavaara deposit and has been exposed to ductile deformations (Martinsson, 2004). Granite veins often intrude the ore (Hedstrom et al., 2001). The dip of the ore bodies varies from 45° to 70° and the iron content varies from 54 to 63% (Hedstrom et al., 2001).

The mine is divided into two parts: the western and eastern fields. The ore bodies in the eastern fields are composed of massive magnetite ores with a current known depth of 1600m and provide 80% of the total production (Lund, 2013). The western fields consist of small magnetite-hematite deposits with a current known depth of 950m (Lund, 2013). The ore bodies in the eastern field are Alliansen (Al), Fabian (Fa), Kapten (Ka), Dennewitz (De), Parta (Pa), Printzsköld (Pr), Ö ........


Mining Methods

  • Sub-level caving


Summary:

The Malmberget mine has scattered ore bodies with varying mine design parameters.

The mine design and layout at the Malmberget mine vary from one ore body to another. The Malmberget mine uses both transverse and longitudinal layouts for production, depending on the width of the ore body. This provides the mine with the flexibility to employ different mine layouts to reduce ore loss. The layout at one level can be longitudinal and the level below can be transverse, making the layout more complicated than a typical SLC operation. In most cases, levels up to 780m (below surface) have a longitudinal SLC layout, while levels from 805m and below have a transverse layout (Kristina Jonsson, personal communications, 2015).

A drift´s orientation is guided by ore geometry and ore geology. The production drifts are planned to avoid weak zones and zones with major waste intrusions (Sven-Erik Wennebjörk, personal communications, 2015). Longitudinal SLC accounts for 10% of the production and transverse SLC accounts for 90% (Sven-Erik Wennebjörk, Personal communications, 2016). The sublevel interval varies from 20 to 30m (floor to floor) depending on the ore body. The drift spacing stays constant at 22.5m (centre to centre) for all ore bodies. The overall orientation of the production drifts is optimized to minimize ore loss, as the ore body shape and size varies. But this variation results in a complex network of production drifts, and drifts at the upper levels are no ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits202120202019201820172016
Iron Ore Mt  ......  Subscription required *  ......  Subscription required *  ......  Subscription required9.49.29
All production numbers are expressed as pellets & fines. * Combined production for Kiruna Mine, Malmberget Mine and Svappavaara Mine
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Operational Metrics:

Metrics2019201820172016
Ore tonnes mined 15.5 Mt13.5 Mt13.2 Mt16.4 Mt

Reserves at December 31, 2021:

CategoryOreTypeTonnage CommodityGrade
Proven & Probable 14 Mt Iron (hematite) 46.2 %
Proven & Probable 284 Mt Iron (magnetite) 40.4 %
Measured Mixed 4 Mt Iron 59 %
Measured 5 Mt Iron (hematite) 63 %
Measured 211 Mt Iron (magnetite) 58 %
Indicated Mixed 18 Mt Iron 52 %
Indicated 6 Mt Iron (hematite) 55.1 %
Indicated 258 Mt Iron (magnetite) 57.7 %
Inferred Mixed 4 Mt Iron 53.4 %
Inferred 0.1 Mt Iron (hematite) 48.1 %
Inferred 373 Mt Iron (magnetite) 58.4 %
Total Resource Mixed 27 Mt Iron 53.3 %
Total Resource 11 Mt Iron (hematite) 58.5 %
Total Resource 842 Mt Iron (magnetite) 58 %



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 27, 2022
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Corporate Filings & Presentations:

DocumentYear
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Fact Sheet 2018
Annual Report 2017
Other 2017
Other 2016
Other 2008
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