On Wed, 23 May 2012 09:12:40 -0400, "Stormin Mormon"
wrote:

It will be interesting to see. Some folks (refrigeration repairmen, who
weigh refrigerant bottles) often have scales that can measure the full
weight of a propane tank. Someone will eventually notice. And act.

Every place I've filled my tanks, at least for the last ten years, has either
weighed the tanks while filling, measured the propane by volume (gas meter),
or both.