I emailed the guy, here's his response.
the mine is located in Pennsylvania. I can give you more information if you wish to talk by phone. My cell number is: (570) 439-7174
I am acting as the point of contact for the seller. I have documents for and photos of the mine and associated equipment. This is a strip-mining operation and is currently operating with all permits.
Professor of Computer Sciencejhk2@cornell.edu