Wow, very nice map, awesome details. I also like the 'mining laser'.
Just took a quick look and did no playtesting yet. I am not sure if the long hallways are really a problem (because of doors, etc.).
There is still a missing shader in the 'processing', but I haven't found anything else wrong.
Just 2 things:
- You are using a fan-texture. I'd prefear a func_rotating, so you could make it 3D, but that's not really necessary if you don't want to.
- Shouldn't you get killed if you fall down the mining laser? You currently just stand on an invisible floor.