Imagine how many people might have worked there... As you say it may have been a hive of people.. Im sure no pun intended 😂👀 and now it's nothing, nobody but you setting foot there in years. Something that would have seemed to be in existence forever is now blown out like a candle.
It's sad
The info I got regarding it's history was that it was in bad shape during 2003/2004. This one was a bit of a gem, not being heavily vandalised and most of the decay being natural. That's what made it stand out so well.