There is a tunnel way down below..maybe 4 floors below the basement
and a platform, similar to a railroad platform. CBS installed a generator
(maybe 15KW) for emergency power operated from TX.
During the time we were building BC engineering took Herb Gardener &
me down to show us the other end of the start-up switches.
I don't know how far it goes.We didn't see the either end.
Note: There IS a subway platform behind that huge sliding door where the matrons (and male equivalents?) have their vacuum cleaners and floor polishers stored.
I was down there in the early 70's and peeked behind the door with a flashlight. I could see tracks, and what appeared to be an old subway stop with the curved white tile walls and a tile station name, which I could not make out. I was told that the building was used to manufacture auto transmissions BEFORE it was Sheffield Farms. Perhaps they had raw goods and/or finished products shipped out directly using those tracks??
This looks like a good subject for a deep investigation!