In the mid-70's I sold Haldol ( a tranquilizer) at Letchworth, and used to dread calling on the place. patients in helmets, hitting their heads against walls. patients masturbating in public.

just an realy mind blowing thought, . that seems to just fit this perfect, remember the little people in the horror movie phantasm? realy creepy when ya think about them in a place like that

Those are forced draft fans.

"Smithers! Who is that baldheaded imbecile down by Main Turine Number Three???"

Probably used by some sort of little carts to haul the fly ash away.

where is this exactly - love to tinker with some of the pieces if allowed on board