That was "A" building.

I worked in that hell-hole from 1971 to 1973. That picture shows a locked gate from the main ward to several "seclusion rooms". When one of the patients started to get rowdy, we would get a group of several (as many as needed) attendents and toss him into the seclusion room and lock him in. It was kind of like soletary in a prison. Usually we would give him a shot of Chlorpromazine in the ass and we would ALWAYS bang his head against the wall on the way in, to reinforce the learning experience.
I don't feel good about this part of my life and I almost never talk about it. It did happen though.