> P.S. Although there is some danger involved, I never had even a hint
> of cave in while doing this. I always had a line tied to me and to a
> block about 15' from the hole, just in case. Having a lookout posted
> topside should be required.
The line is required so that the trench rescue team can get a good idea
of where the body is located. I know you aren't superman. ONLY
superman can escape a trench colapse. Did you know that the velocity of
the sidewall of a trench during collapse is ~60mph? There is a
possibility of you escaping a trench collapse, but, the probability of
you doing it is near zero.
Firefighter / EMT,
Heavy / Tactical Rescue
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