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Kumba Iron’s Kolomela mine set new record with big blast

Kumba Iron Ore’s Kolomela mine in Postmasburg set a new record for a single blast at the mine on August 4th 2014. The blast, in the Kapstevel operational area, took place under strict safety supervision and freed up more than two million tonnes of waste material for removal. About 940 tonnes of explosives was set off in a timed sequence over 3.5 seconds. The blast area covered 4.6 hectares.

Staking started on June 12th 2014 and took just over seven hours to complete, followed by the drilling of 2,542 holes to an average depth of 17.45 meters. The charging of the holes started on June 20th 2014.

An average single blast at the mine produces about 400,000 tonnes of material, with the previous biggest blast producing 1.6 million tonnes. 

Mr Aart van den Brink GM of Kolomela mine said that “This blast contributes towards our targets set in our mine execution plan and to our good production performance for the mine.”

He said that “Kolomela mine produces direct shipping ore for the export market. The mine has an annual production capacity of 10 million tonnes. Production in the H1 of 2014 was up 4% to 5.5 million tonnes for the six months till end June.

Source – Strategic Research Institute

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