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South Africa
Beeshoek Mine

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 Location:
10 km NW from Postmasburg, South Africa

  Regional Office:
Assore House 15 Fricker Road Illovo Boulevard
Private Bag X03 Northlands 2116
Johannesburg
South Africa
2196
Phone+27-(0)-11-770-6800
Fax+27-(0)-11-268-6440
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
Mining Method
  • Truck & Shovel / Loader
Processing
  • Wash plant
  • Crush-and-stack plant
  • Jig plant
Mine Life7 years (as of Jan 1, 2020)
Local sales volumes were 22% lower at 2.4 million tonnes (F2019: 3.1 million tonnes) mainly as a result of a temporary shutdown at Beeshoek Mine’s primary customer during the lockdown. The steel producer restarted operations in early June 2020. As a result, production at Beeshoek Mine was stopped from mid-May until the end of June 2020. The impact of the lockdown (and other Covid-19 restrictions) on local iron ore sales volumes was 0.74 million tonnes.


Owners

Source: p. 81
CompanyInterestOwnership
African Rainbow Minerals Ltd. 50 % Indirect
Assore Ltd. 50 % Indirect
ARM owns 50% of Assmang (Pty) Ltd and Assore (Pty) Ltd owns 50%.

Assmang is jointly managed by ARM and Assore. ARM provides the administration and technical services while Assore performs the sales and marketing function.

Deposit Type

  • Sedimentary

Source: Source p.48

Summary:

Beeshoek mine is situated within a sequence of early Proterozoic sediments of the Transvaal Supergroup. Mine is symmetrically located on the Maremane Anticline in the Griqualand West Sequence of the Transvaal Supergroup, as well as the Elim Group of the Keis Supergroup.

In general, two ore types are present: laminated hematite ore, forming part of the Manganore Iron Formation, and conglomerate ore, belonging to the Doornfontein Conglomerate Member at the base of the Gamagara Formation. The laminated ore types occur in the upper portion of the Manganore Iron Formation as enriched high-grade hematite bodies. The boundaries of high grade hematite orebodies cross-cut primary sedimentary bedding, indicating that secondary hematitisation of the iron formation took place. In all of these, some of the stratigraphic and sedimentological features of the original iron formation are preserved. The conglomeratic ore found in the Doornfontein Conglomerate Member of the Gamagara Formation, is lenticular but not consistently developed along strike. It consists of stacked, upward fining conglomerate-gritstone-shale sedimentary cycles.

The lowest conglomerates and gritstones tend to be rich in subrounded to rounded hematite ore pebbles and granules and form the largest part of the resource. The amount of iron ore pebbles decreases upwards in the sequence so that upper conglomerates normally consist of poorly sorted, angular to rounded chert and banded iron formation pebbles. Hematite is the predominant ore mineral, but limonite and specularite also occur.

The southern Beeshoek orebodies were exposed to more erosion and hence are more localised and smaller. Outcrops are limited to the higher topography on the eastern side of the properties. Down-dip to the west, the ore is thin and deep. The strike of the orebodies is also in a northsouth direction dipping to the west, but less continuous.


Mining Methods

  • Truck & Shovel / Loader

Source: p.50

Summary:

Mining operations are all open-pit, based on the conventional drill-and-blast, truck-and-shovel operations. Run-of-mine ore is crushed and stored as ‘on-’ or ‘off-grade’ on blending stockpiles.


Crushing and Grinding


Processing

  • Wash plant
  • Crush-and-stack plant
  • Jig plant

Source: Source

Summary:

After the ore is mined and blended in the pits, it is loaded onto dump trucks and transported to the primary crushers. After crushing, the ore is stacked onto a longitudinal blending bed that serves as a buffer between the mining and the ore preparation plant at Beeshoek North.

The ore is then moved via conveyor to a scalping screen, where oversized rock is separated and transferred into a secondary crusher.

All crushed material is recombined and conveyed to the washing and screening section. Contaminated ore is directed to the jig facility for beneficiation.

The washing and screening plant is capable of handling 1,400 tons per hour at full capacity and is controlled within the processing equipment efficiency limitations to maintain the required chemical and physical criteria. After washing and screening, the final products – Lump, Fines and DR Lump – are stockpiled on final product stockpiles located at the mine’s railway siding.

The jig plant is capable of processing 650 tons lower grade contact ore per hour. After secondary crushing, the off-grade ore is placed on the feed stockpile at the jig plant. Ore is then pulled from the stockpile for tertiary crushing.

Subsequently, the material is stacked on to Lumpy and Fines jig stockpiles. The ore from these separate stockpiles is then fed into the jig plant, where pulsating water flows into the bed to separate the less dense fraction waste from the denser fraction middling and high quality ore. The waste is dewatered on screens and conveyed to a waste stockpile. The middling and high quality ore is passed over its own dewatering screens before being conveyed to separate conical stockpiles. Feeders beneath these stockpiles combine the products into the desired ratio to produce a beneficiated product ready for blending into the final product.

The final products is then stockpiled onto the same final product stockpiles as the washing plant product.


Production:

CommodityUnits202020192018201720162015
Iron Ore Mt 33.63.93.23.13.4
All production numbers are expressed as lump & fines. ^ Guidance / Forecast.

Operational Metrics:

Metrics202020192018201720162015
Ore tonnes mined 4.26 Mt4.44 Mt4.17 Mt3.39 Mt3.05 Mt3.35 Mt
Stripping / waste ratio 4.26 Mt

Reserves at June 30, 2020:

CategoryOreTypeTonnage CommodityGrade
Proven In-Situ (OP) 26.05 Mt Iron 64.64 %
Probable In-Situ (OP) 0.13 Mt Iron 63.35 %
Proven & Probable In-Situ (OP) 26.18 Mt Iron 64.63 %
Measured In-Situ (OP) 86.71 Mt Iron 64.06 %
Indicated In-Situ (OP) 5.11 Mt Iron 63.44 %
Measured & Indicated In-Situ (OP) 91.82 Mt Iron 64.02 %
Inferred In-Situ (OP) 5.35 Mt Iron 62.58 %

Commodity Production Costs:

CommodityUnits202020192018
Cash costs Iron Ore ZAR 246 / t 234 / t 223 / t

Financials:

Units201820172016201520142013
Capital expenditures M ZAR 474  277  436   645   931   550  
Operating Income M ZAR 318   698   942   580  


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
Sr. General Manager Maryke Burger LinkedIn Dec 23, 2020
Technical Services Manager Andrew Matolong LinkedIn Dec 23, 2020

Staff:

Total WorkforceYear
1,057 2020
1,445 2019
1,378 2018
1,076 2017

Corporate Filings & Presentations:

DocumentYear
Integrated Report 2020
Other 2020
Year-end Mineral Reserves 2020
Integrated Report 2019
Year-end Mineral Reserves 2019
Integrated Report 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Year-end Mineral Reserves 2016

Aerial view:

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