I watched the video in hi-res a couple of times, and every time I watch it, I see more interesting things.
Some of those machine tools look pretty decent, and BIG !
I would guess that the ventilation may not have been great in there, especially if they were using cutting torches, or painting, or other things that would produce fumes/dust.
The noise would have probably been very bad, with the sound no doubt echoing all through the place against the rock walls.
And the lighting looks pretty minimalistic, with what looks like 48" fluorescent strips every so often.
I have tried to figure out what each machine tool did, and I think I understand most of it.
One machine seems to be to true up two wheels mounted on an axle.
Sort of a "Land That Time Forgot" (I think that was a movie).
The moisture in the air is taking its toll on anything that will rust.
The stacks of piston rings is very cool.
The switchgear room is interesting.
I would not want to be in there if something shorted.
Getting the utilities in and out, such as ventilation, electrical, water, sewage, compressed air, etc. seems like it would be difficult.
I see some utilities in the trench. Ductwork generally hung in the air.
Quite an impressive facility, give that some poor worker had to blast/carve every inch of that out of solid rock, and drag all of that material out a very long path.
The could roll the large machines in on a rail car, but getting those big lathes and things back in the side tunnels would have been tricky with the low overhead. Must have had rollers under the machines.
Figuring out the logistics of building a place like this is impressive.
Seems like a long walk in to work if they had to come in via one end or another.
Perhaps there were some intermediate stairs along the way, but those would have to go up through a lot of rock, so I suspect everything came in through the ends of the tunnel.
Its like some sci-fi movie.
Hard to believe that was a real functional place.
.
