In the late 80's I used to take environmental samples for testing from various places in the old Jeep plant. The old plant was a labyrinth of halls, passageways, mystery rooms, and ramps that went from one building addition to the next. The old plant had a very gritty and antiquited feel to it. All in all, a very cool place to be in and think about history of the facility and how it helped us win WWII.