Stopped at the local truck stop tonight for a sandwich and there was a flatbed semi out in the lot that was STACKED with old propane tanks. Everything from 100 to 1000 gallon. I waited out in the lot for 15 minutes or so wanted to talk to the driver and he never came out. I wish I could come across a scrap yard like that one. It would solve a lot of tank finding issues I am having around here.