Costain and Galliford Try have been fined £1.4m each after an accident led to a man having three toes amputated.
On 5 March 2015 Peter Rowen’s foot became trapped in a large rotating screw during commissioning at a water treatment works in Cheshire, which led to three of his toes being removed.
An investigation by the Health and Safety Executive found that Costain and Galliford Try Building had failed to properly plan and manage the commissioning works.
HSE inspector David Argument said the injury had been “easily preventable”.
A spokeswoman for Costain said: “While we have stringent safety procedures, something clearly went wrong which resulted in the accident involving Peter Rowen.
“We deeply regret this. We offer our heartfelt sympathies to Peter for the impact his injuries have had on him and his family.”
A spokesman for Galliford Try said: “We have rigorous health and safety procedures and policies in place that are constantly being reviewed, and it is regrettable when any accident or incident occurs.
“We pass on our sympathies to Peter Rowen for the injuries he sustained and the impact this has had on him and his family.”
The companies were found guilty at Liverpool Crown Court of breaching the Health and Safety at Work Act 1974 and were each fined £1.4m.
They were also ordered to cover total costs of £101,046.