Why I think "the Pipeline" thing is a BAD idea:

[MineralMan]

20. I worked for a gas company in Southern California

for a couple of years, maintaining their physical pipeline maps. That was back in the late 1960s. Adding new lines, down to the individual service lines, and correcting errors in ink on cloth maps. Some of those maps dated back decades, and had been changed and corrected so many times that they were tough to read accurately.

Most of the time, though, I was making copies of segments of the maps for the work crews heading out each morning. It was very interesting. I had no formal training in that type of drafting, but had some general drafting skills, so I ended up being transferred to that job and learned by doing.