Top Floor Tunnel Door In most places, it may seem off for there to be a tunnel door on the top floor of a building, but Ford was that kind of place. This door from the steam plant led into a skyway and tunnel that connected to the main assembly floor. Similar Images ...based on the tags: black&white, dark, doors, elevators, lights, squares, windows... The office building was fancy compared to the utilitarian factory behind it. My favorite part was the logo crown. A scrapped steam turbine, perhaps. In the background you can see a gutted casing for another turbine. A rusting disconnect gangway. The smokestack is for a boiler, if I recall. This miner locker room has probably never been so clean. One of two control towers that reached over the lake. The control panel here was used to move the conveyors over the ship’s hold doors, adjust flow of the taconite, and so on. The bottom of the elevator in the new foundry. Looking toward the Quenching Tower from the coal tower platform. …somebody get the number of that truck! Near the Day Rooms in the Paying Patient ward. The stock house tanks were long scrapped for their steel, but what remains gives a sense of what it looked like.