date:Aug 17, 2012
No one was hurt in the explosion, which destroyed the boiler house at the firms Aspatria Creamery, Station Road, Aspatria on July 29, 2010.
The force of the blast blew the roof off the building and blew out part of two ground floor walls.
Carlisle Magistrates' Court heard that an investigation by the Health and Safety Executive (HSE) found that a blocked vent on the calorifier - a water heating and storage system - had caused it to explode.
Blocked vent
The calorifier could hold up to 9,000