Just to let you guys know, since at least Feb 20, the Zin building has not been blocked off. I have been there several times (most recently March 21) and it is completely open, I have even seen some other spotters there whenever I go.

Just thought I would let you guys know, its open for spotting. Better get some in before they decide to close it again. Funny story, I think I may actually be the one responsible for getting unblocked, because on the 20th when I went there were 2 guys (I assume working for whatever company owns the place) clearing furniture out of the building into a van supposedly getting ready to demolish the building (they could have been robbers for all I know lol). I asked if I could drive in and take some photos and they said sure, and I guess they forgot to close the place back up because it hasn't been blocked since.

If they ever put the block back up, you can park in the little brown brick building right up the road from Zin and walk over to the parking lot, which I did several times before it re opened.