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South Africa
Kolomela Mine

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 Location:
16 km SW from Postmasburg, South Africa

  Regional Office:
124 Akerboom Street
Centurion
South Africa
0157
Phone  ...  Subscription required
Fax086-295-0746
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
  • Iron (hematite)
Mining Method
  • Truck & Shovel / Loader
Processing
  • Dense media separation
Mine Life12 years (as of Jan 1, 2019)


Owners & OPERATOR

Source: p. 197
CompanyInterestOwnership
Aveng Moolmans (operator)
Anglo American plc. 53.4 % Indirect
Kumba Iron Ore Ltd. 76.3 % Indirect
Sishen Iron Ore Company (Pty) Ltd. 100 % Direct
Sishen and Kolomela are fully owned by the Sishen Iron Ore Company (Pty) Ltd (SIOC). Kumba Iron Ore Limited has a 76.3% interest in SIOC (2018: 76.3%). Including shares held by Kumba Iron Ore in relation to its own employee share schemes, the Group’s effective interest in Kumba Iron Ore is 70.02%. Consequently, the Group’s effective interest in SIOC is 53.4% (2018: 53.6%).

Deposit Type

  • Banded iron formation


Summary:

The Kolomela mine orebodies comprise hard, high-grade, conglomeratic and laminated haematite orebodies. The ores have been preserved as three separate orebodies within basinal and graben structures up to 2km long, 400m wide and 300m deep.

The Welgevonden deposit, also known as the Sishen South deposit, is located on the southern extremity of the Maremane Dome, 9 km southwest of the town of Postmasburg and 65 km south of Sishen Mine. The deposit is made up of several smaller ore bodies and is currently mined at Kolomela Mine under the ownership of Kumba Iron Ore.

The only BIF present at Welgevonden appears to be that of the Kuruman Iron Formation, with the Griquatown Iron Formation having been removed by erosion. The main structural characteristic in the west of the Welgevonden area is the Wolhaarkop Dome, an overturned anticline replicating the larger Maremane Dome, which occurs in the east of the deposit.The ore bodies are intensely folded and faulted, and are preserved within erosional remnants that are not as continuous, but are of similar structural types to those encountered at Sishen.

Two tectono-stratigraphic settings for the ore bodies have been defined by Alchin and Botha: a palaeosinkhole-hosted setting applicable to the Ploegfontein, Leeuwfontein and Klipbankfontein ore bodies; and a synclinal basin setting applicable to the Welgevonden and Kapstevel ore bodies. Marginal deformational effects, thought to be related to the ~2.2 Ga Kheis event, occur towards the west of the deposit and decrease rapidly to the east. The scattered nature of the ore bodies at Welgevonden could be due to the removal of upper lithologies by erosion and/or due to smaller, less connected underlying palaeosinkhole, pseudo-graben and synclinal structures. The Sishen South deposit is also much smaller than the main ore body at Sishen and early exploration estimates put its mineable ore reserves at approximately 25% of those at Sishen.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Kolomela Mine has been designed as a direct shipping ore operation, where conventional open-pit drilling and blasting, shovel-and truck loading and hauling mining processes will be used to mine the haematite ore from three different pits. A combination of run-of-mine buffer and product stockpile blending on site, as well as further blending with product from Sishen Mine, will be used to ensure that the product adheres to the required client specifications.


Crushing and Grinding


Processing

  • Dense media separation

Source: Subscription required

Summary:

Kolomela mine is primarily a direct shipping ore operation where Ore Reserves are crushed and screened to deliver Saleable Product at the required top sizes. The mine commissioned a small-scale modular dense media separation (DMS) plant in 2016 to treat lower Fe-grade ore; scheduled throughput through this DMS plant has been increased in the 2017 LoM plan, resulting in a lowering of the overall average yield.


Production:

CommodityUnits202020192018201720162015
Iron (hematite) Mt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required141312
All production numbers are expressed as lump & fines. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required50.2 Mt45.7 Mt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required3.7 3.1
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required64 Mt60.6 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGrade
Proven 103.9 Mt Iron (hematite) 63.5 %
Probable 55.4 Mt Iron (hematite) 64 %
Probable Stockpiles 13.1 Mt Iron (hematite) 55.4 %
Proven & Probable 159.3 Mt Iron (hematite) 63.7 %
Proven & Probable Stockpiles 13.1 Mt Iron (hematite) 55.4 %
Measured & Indicated 112 Mt Iron (hematite) 62.6 %
Measured & Indicated Stockpiles 4.2 Mt Iron (hematite) 55.7 %
Inferred 33.7 Mt Iron (hematite) 63.2 %

Commodity Production Costs:

CommodityUnits201920182017201620152014
Cash costs Iron (hematite) USD  ......  Subscription required  ......  Subscription required 18.1 / t 13.7 / t 13.9 / t 19.2 / t
Subscription required - Subscription is required.

Financials:

Units20192018201720162015
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required 344  
Revenue M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 7,980  
Operating Income M ZAR 4,423  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2020
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2020
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required 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 Subscription required 2015
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Integrated Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Integrated Report 2016
Year-end Mineral Reserves 2016
Integrated Report 2015
Year-end Mineral Reserves 2015
Integrated Report 2014
Integrated Report 2011
Annual Review 2010
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Aerial view:

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