> A collapse in the roof of a gigantic tunnel being driven into a hillside sounds like a pretty dramatic event. But the entrepreneur TJ Rodgers is calm as he re

> A collapse in the roof of a gigantic tunnel being driven into a hillside sounds like a pretty dramatic event. But the entrepreneur TJ Rodgers is calm as he recalls what happened. "It's not like you see in the movies with rocks flying, and stuff like that. "It will kill you but it's kind of a slow motion thing, and you can walk [away] and stay in front of it," he explains. I found this really interesting! A cave in is a small motion thing which you can walk away from.