With regards to your container bit: don’t enter ANY confined space, regardless of where the egress is, without a lifeline and someone on the outside watching and ready to pull you out, preferably two or three people. Make sure THOSE people do not enter after you to get you if something goes wrong - chances are they’ll just wind up dead as well.
Yeah, plenty of gasses can accumulate on closed spaces but I’ve seen far too many documentaries about people dying with simple rust causing lack of oxygen.
With regards to your container bit: don’t enter ANY confined space, regardless of where the egress is, without a lifeline and someone on the outside watching and ready to pull you out, preferably two or three people. Make sure THOSE people do not enter after you to get you if something goes wrong - chances are they’ll just wind up dead as well.
Yeah, plenty of gasses can accumulate on closed spaces but I’ve seen far too many documentaries about people dying with simple rust causing lack of oxygen.