article_snippet.sent: An air ambulance was the only casualty among 30 workers on site at the time.
article_snippet.sent: An air ambulance said: 'We are used to big bangs and crashes all the time, that's the nature of demolition. '
article_snippet.sent: I was just finishing off some paperwork when there was a huge crash and a rumble, We knew it was out of the ordinary and everyone ran outside. '
article_snippet.sent: We are trained for this so everyone kept calm, but this was the first time anything like this has happened to An air ambulance. '
article_snippet.sent: There was a huge dust ball, We were checking everyone was all right when a couple of the first aiders brought out one of the guys.
article_snippet.sent: When the structure came down there were 30 men working on the site - luckily just one was injured .
article_snippet.sent: Eyewitness Murat Akkulak, a research co-ordinator at the Royal College of Surgeons, told the BBC: 'There was a lot of dust
article_snippet.sent: They seem to have had a really lucky escape to me, because everything else had just collapsed around They.'