12” in diameter, and 12” tall? Yup, echoing what Charles Martel said, I have to wonder where he got the pipe and pipe caps that big. The purchase of that stuff by an individual would’ve made the police work very simple I’m sure.
Or, the reporter just got it wrong? After all, you can’t spell “stUPId” without “UPI”, right?
From another source:
Herriman told investigators he manufactured the device at his residence and that the components used to construct it were still located there, including plastic pipes, what appeared to investigators to be black powder, a propane tank and batteries and wiring, the complaint says.
http://fuelfix.com/blog/2011/08/16/okla-man-due-in-court-for-natural-gas-pipeline-bomb/