Originally Posted by
Chuckles1
Yes, a big tank of liquid nitrogen that blows out a safety valve would quickly displace virtually all the oxygen in an elevator in seconds. Compressed gas cylinders would do the same if they had a catastrophic failure and spewed their contents. Hence my point about not riding in elevators with any compressed or liquified gasses.
Good point, agree heartily, should be illegal (or elevators should be required to have a forced air system to evacuate the gas rapidly).