Never put propane or propane accessories in bunkers.

[Harlan]

Not a whole lot of it online, but I found this one:
https://www.kltv.com/2020/01/23/cause-d ... etermined/

They had a Rising S Bunker with propane appliances and when they turned on the light switch it blew.
Never put any fuel, especially propane, or gas appliances in a bunker!