King Brown, The Federal Bureau of Mines regulates coal mining operations which must post a bond in order to mine. The bond is for the reclaimation project at the end. In Pennsylvania, our coal mines are so old, dating back to the Civil War and beyond 1860, that their operation were unregulated. New mining companies have to post this bond as they are more or less under Federal regulation.
However, the land has come back, due to mostly shaft mining but no one seems to know who owns it so the State's Game Commission either inherits it or buys it. And if our Game Commission regulates it you either hunt on it or you better stay off of it!!! I love it!!!