State Police spokesman has stated there is no gas service to this area. There was a 50 gallon propane tank in the building, but State Police not sure if that was the source of the explosion. Would a 50 gallon tank destroy a building like this?
"Would a 50 gallon tank destroy a building like this?"
I'm not an expert, but I don't think so.
Use of cas cannisters is very common here in Japan, and when they explode you don't get devastation like that.
If the 50 gallon tank caused it, there would not be a 50 gallon tank left!