Doug-I have been to Twisted Gun and agree that it is a great use of land that would otherwise go to waste. The concern that I had is that it is so remote and difficult to find. Like A.G. mentioned, there is no easy way to get there. I thought I had heard somewhere that a highway was going to be routed near that area but, absent that, the Hatfields and McCoys (and their progeny) may comprise the majority of people who see it.
As for the course, I thought it was solid but for the life of me, I can't remember a single hole other than #10 with its precipitous drop from the tee. As for the vistas, it was very foggy the day I played and I never got a sense of being on the top of a mountain (other than the drive up the access road to the course).
This may be a regional phenomenon but on the same trip I played Stonecrest in Prestonsburg, KY. This is another course plotted on a reclaimed coal field. Stonecrest was not as good as Twisted Gun but there are some interesting holes routed along the sides of the ridges running through the property. Both are affordable and a nice use of some land that may not have much utilitarian value beyond normal reclamation.
By the way, Doug. The best course I have seen on what could have been reclaimed coal land (and I have not seen the Pete Dye Golf Club) is Castle Shannon in Eastern Ohio (located in the garden spot of Hopedale, Ohio). It is a course in the middle of nowhere designed by Gary Grandstaff (who I believe is a Pete Dye protege). It is a terrific golf course which winds through a roller coaster piece of property (hills, ridges, wetlands). Ironically, Grandstaff is no longer in the design business...last I knew, he was the superintendent of the Pete Dye Golf Club. Very affordable and very fun. I am not sure if the land actually was mined at one time...but in that part of Ohio, it is a good bet.