[mowowie]

I’ve seen pictures of homes literally burned down to the ground and the only object left remaining is the steel propane tank.

[fidelis]

"I’ve seen pictures of homes literally burned down to the ground and the only object left remaining is the steel propane tank"

That's because LPG tanks are designed to vent so that they don't explode when overheated. The venting gas from the tank probably contribute to the total destruction of the burned down house you saw.