Bodmin Magistrates’ Court heard how David Avent, trading as David Avent Building Services, undertook a barn refurbishment in Callington during February 2017.

The victim, who had recently turned 17, was using a circular saw to cut wooden flooring sheets when the blade made contact with his hand.

The saw blade cut fully through his index finger, three quarters through his middle finger and half way through his ring finger.

An HSE investigation found David Avent had no record of any information, instruction and training that he had provided to his employee in the safe use of the circular saw nor had he ensured that safe working practices were followed when cutting the flooring sheet.

The investigation also found that circular saw blade had not been properly adjusted for the size of material being cut at the time of the incident and the flooring sheet was not appropriately supported whilst being cut.

David Avent of Callington, Cornwall pleaded guilty to safety breaches and was fined £1,120 and ordered to pay costs of £8489.48.

Speaking after the hearing, HSE inspector Dr Jo-Anne Michael said: “This injury was easily preventable and the risk associated with the task should have been identified.”

“Employers should make sure they properly assess and apply effective control measures to minimise the risk from contact with dangerous parts of machinery to ensure that the risks are given careful attention to ensure they are properly controlled.”