[vonsmog]

What is odd is this is in a large area, not close together. There is something not right about it, as around here there is a regulator on the line coming into the house to control pressure changes. So you would have to bypass the regulator or blow them out (don't know if that is possible) for this to happen. Also here if over pressurized then then the extra gas is vented to the outside, so that would have to be removed or blocked off. With over 70 building effected, I think someone is to blame and not an accident.