The Coroner, Ian Arrow, recorded a narrative verdict, concluding that Alan Levers had died during an attempted armed robbery.
He said the cause of death was a combination of factors as a result of his chest being compressed, wearing a gas mask with the respirator pressed against the floor, and all this was exacerbated by the level of alcohol he'd consumed.
More top news
Film and theatre actor Alex Giannini - star of 'Legend' and 'Elizabeth: The Golden Age' has died ahead of a theatre performance in Plymouth.
Large charities could be forced to sign up to a new watchdog under changes being introduced by the Government to tackle rogue fundraisers.
The Rugby World cup continues-but as Black History Month gets underway we’re looking back at a man whose rugby heroics merit recognition.