Alba Proteins Penrith Ltd. , a petfood manufacturing company, was fined £20,000 (US$33,700) after three workers were injured by an offal cooker explosion at a plant in Cumbria, England, according to Safety Media .

Workers were trying to clear a blockage in the industrial cooker in August 2007 when steam and offal exploded through the inspection hatches.

"Alba Proteins should have carried out a formal risk assessment so that it was able to offer employees guidance on how to deal with blockages safely. Instead, no training was provided and workers were put in danger as a result," said Steven Smith, head of operations for the Health and Safety Executive , which prosecuted the company.