Not to mention the government mandated "safety" features on propane bottles (the 20lb kind for your BBQ grill out back). They now have some kind of float inside that supposedly protects you. But those floats always freeze up here in Colorado and no gas comes out. So people around here end up banging on the tanks with rocks, kicking them, and dropping them from heights to try to jar the float loose. Sounds so much "safer" to me! BTW, I'm a fan of the "turn the tank upside down and drop it on it's head from 6 inches up" method myself. Wonderful government regulations...