Four contractors were injured in an 'explosion' on the Scunthorpe Corus steelworks.
Three fire engines were called to the coke ovens in Dawes Lane at 11.35am yesterday after a flare stack was ruptured, causing a loud bang.The firefighters stood by as Corus employees isolated the supply to the damaged stack.
Four contractors were treated at an on-site medical centre but were later allowed to return back to work.
Corus has launched a full investigation into the incident and the Health and Safety Executive and Environment Agency has been notified.
Mike Seaman, of Humberside Fire and Rescue, confirmed firefighters attended the scene after reports of an 'explosion' at the plant.
He said the service 'stood down' after around 30 minutes at the scene.
Corus's Scunthorpe spokesman, Rob Simpson, said the incident happened during routine maintenance work on a flare stack in Dawes Lane.
He explained the stack was used to burn off surplus, clean coke oven gases.
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