I read this AFTER the all-clear ETA but I am still just going ACK. I don't know what possessed anybody to think it was a grand idea to put this incredibly flammable stuff in pipes and use it for running appliances. But then I remember that indoor rooms used to have gas flames in them, with just open cages around them, and there's a Ngaio Marsh book in which an actor is murdered by someone in a dressing room with which his shares a gas line -- if you blow out the gas in one dressing room, it goes out in the other one too. We're all mad here.

P.