Those are cool pic's.
That 'in-line pc" you show... I used to build fence.... we built one for PG&E location they called a "Pig Launcher" I'm thinking that gizmo you got there is the "Pig" they run it thru the pipeline and it x-rays the pipe as it travels thru. well, it found a weak spot just south of town here and the pip let go next to a house.

everyone was fine, but interesting how they run equipment right thru the pipe alomng with natural gas.
I'm guessing the 'no-camera' rule didnt apply to that facility. When I worked at the Geo-Thermal plant up here in Sonoma County California, (The Geysers) they had us sign something that said we wouldnt bring in camera's. That was back in the early 80's, I dont know if it is still in affect.
Hay, rwb944p, looks like we hijacked your thread! lot's cool stuff got startred here, just by saying 'hello' to a new friend.