MichaelMc
Working toward Cenotes
Car exhaust is carbon monoxide, CO. People in confined space is carbon dioxide, CO2. I'm sure 'air quality in sump spaces' is sump diving 101. And the world experts are there. I wish we had the data, but the experts are there.You are comparing apple with orange. ...
We also don’t consider the harmful elevated CO2 level that would be in the air as we breathe out in confined space, like in an enclosed garage with a car engine on. The oxygen concentration may still be closed to 20-21%, but people died there due to breathing air with elevated CO2 coming out of the car exhaust.
This ^^^^^^^ ... "in favor of those who are on the scene. "In Thailand." "Underwater.""The NSS Cave Rescue Commission National Coordinator, who clearly aimed to leave his own speculation out of it in favor of those who are on the scene. "In Thailand." "Underwater."