Paul Wakefield and Craig Whelan, both from Nottingham, were killed in 2002 while attempting to clean the inside of a chimney at Bolton’s Metal Box factory.
Fumes inside the chimney ignited and burned through the cables of the hoist they were standing on, causing them to fall to their deaths.
Steve Cottingham, partner in OH Parsons law firm, who acted for the victims’ families, said: “Companies must stop paying lip service to health and safety. Far too many building workers are killed at work every year. Companies must be forced to realise that workers are not expendable in the quest for greater profits.”