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Glen Douglas mine - now owned by Kumba Resources Ltd - was formerly known as Iscor Mining until it split from its steel producing parent, Iscor Limited in 2001. Kumba Resources manages a portfolio of iron ore, coal, base metals and heavy minerals assets spanning three continents rich in natural resources: Africa, Australia and Asia. The company is the fourth largest iron ore producer in the world. Its 472 hectare Glen Douglas dolomite mine is situated at Henley-on-Klip near Vereeniging.

 

Glen Douglas is a conventional open-pit mine producing products comprising metallurgical dolomite, aggregate and agricultural lime. Two pits are in operation, one where the rock is high in silica (>2.5%) and supplies the aggregate industry, while the other rock contains <2.5% SiO2 and supplies the metallurgical industry - essentially ArcelorMittal Steel’s Vanderbijlpark and Newcastle Works. The Glen Douglas dolomite mine entered the aggregate industry in 1991 and currently accounts for 50 to 60% of the total aggregate demand in the Vaal area.


Dolomite (calcium magnesium carbonate) is sometimes used in place of calcite (calcium carbonate) in the production of iron and steel where it serves as a flux to remove impurities and assists in reducing iron ore.

Annual sales are approximately 1.4Mt of dolomite, distributed as follows: Steel Industry - 50%, Aggregate Industry - 47%, Agricultural Iime - 3%.
Mineral reserves are 33 million tons and the total mineral resource is 232 million tons.

Glen Douglas produces products comprising metallurgical dolomite, aggregate and agricultural lime.

Glen Douglas

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Keywords

kumba resources, iscor mining, iscor limited, iron ore, coal, base metals, heavy minerals, iron ore, glen douglas, dolomite mine, open-pit mine, metallurgical dolomite mine, aggregate, agricultural lime, silica rock, ArcelorMittal, steel, calcium magnesium carbonate, calcite, calcium carbonate, iron, flux

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