It was used intermittenly after this date but pretty much sat empty and abandoned for the better part of 30 years. In early 2011 this massive structure was torn down and a icon and era of urban exploration inside its walls ceased.
The ending timelapse footage was shot by Urban Twilight who you can visit at:
https://www.facebook.com/UrbanTwilight.net or www.Urbantwilight.net
Photos during the 'interview' are by Simon Loffler (Sighmon) whose other work you can see at http://www.flickr.com/photos/83267414@N00/
And the photos added into the timelapse of the demolition were by David Stevenson (dscreativ) whose other work you can see at http://www.flickr.com/photos/47273128@N08/