So the rangers intentially set a 100+lb propane tank on fire and put it out. If it was explosive, they would not be that close, and the entire tank would go 'KABOOM'.
Propane is flammable, yes. This is a common fact.
Show me an article where pure propane EXPLODED and I will believe you. (does not include manufacturing plants, as they also store massive amounts of oxygen and other chemicals that cause the explosion, and not the propane itself).
You can't dog it until you use it. You know there IS a refrigerant R290. It's a commercially used refrigerant too. Just not very common. The refrigerant R290 is the same thing as propane, just refined better.
When you start on your own DIY project, you'll understand where aenigma, bowman, and I are coming from.
