I'm interested in finding a list of industrial sites or building
locations where I can do some photography.  This has to be in the San
Francisco Bay Area, principally in the counties of San Mateo, Santa
Clara or Alameda (these counties as first choice) or San Francisco and
Santa Cruz counties (second choice).  Ideally the industrial sites are
closed or abandoned, perhaps in some stage of decay, both for ease of
unrestricted access as well as "ambiance" reasons.  Locations with
significant amount of concrete (walls and other interesting
architectural shapes) would be ideal.  URLs with site information and
physical location of the site are required to satisfy this request.