Apparently they're still working on getting him out (about three hours after he fell). He's said to be alive and breathing. And yeah, to re-iterate, police are suggesting that he was a trespasser. (So no, probably not a worker.)
hummm, if it was a fellow explore or trespasser i wonder if the on site security will be to blame? are they going to step up security now? last time i "passed by" there im pretty sure the guard was sleeping in his both!