Here are a couple of videos I shot at a mine near Pittsburgh, Canoe Creek (PA), and Hellhole (WV) a week or so ago. I think the real carnage will be evident in late February, so I plan to make another round then.
The movies are here:
http://www.batmanagement.com/movies/moviemain.html
Scroll all the way to the very very bottom (it's a long page) for the most recent WNS related items.