Yeah, I knew the reasons (safety, less maintenance, less to staff), but I was simply wondering why one exit may have been chosen over another, and why some places still have all there access points and some don't. I've heard discussed on several fan-trips the re-configuration of the subway system here and there. Mostly, I guess, I'm fascinated by things that aren't there anymore. I'm somewhat of an "avid reader" about things transit, etc., myself, but I also like to post here to get other points of view, or rememberances.
Cheers!
KP