A gear box manufacturer has been fined £180,000 over the death of a worker who was crushed by a slab of metal.
Father-of-five Nigel Lindley, 47, from Oldham, was putting together a large metal gear case when one of the sides collapsed on him in 2008.
Manchester Crown Court heard workers at Renold Power Transmission Ltd were untrained.
The company, based in Wythenshawe, Manchester, admitted breaching health and safety law.
Mr Lindley was assembling a large metal gear case at a factory on Station Road in Milnrow, near Rochdale, when one of the sides collapsed on him.
He had been using an overhead crane to move two sections of the metal case into place on 27 November 2008.
Mr Lindley, who was also a grandfather, removed the chains from one of the sides so he could align them properly and secure them together.
As he knelt down to hammer a connecting dowel through the sections one of the sides fell on him. He died from severe crush injuries.
His widow Gail said: "When Nigel had his accident at work which led to his death I felt as if my whole world had collapsed. He was my best friend as well as my husband, a father and grandfather.
"I have been taking anti-depressants now for about 12 months. I still wake up most mornings crying."
Phil Strickland, the investigating inspector at the Health and Safety Executive, said: "Workers at the site were not told how to safely assemble large gear box cases and so had to make it up as they went along.
"The risks of workers being crushed by heavy objects is well known in the engineering industry but Renold Power Transmission failed to treat the danger seriously by carrying out a proper assessment and providing training."
He added: "One of the metal sections should been laid flat on the floor so the other side could have been safely lifted into place using the overhead crane. If this had happened then Mr Lindley would still be alive today."
A company statement said it deeply regretted the incident which had resulted in the loss of a "talented, valued and well-liked employee".
It added: "Renold has since conducted a full internal investigation into the accident, implemented the lessons learned and is confident that the circumstances in which the accident occurred would not occur again."