While I favor preserving historic battlefields, I also believe in private property rights. If you don't want the land developed (or in this case mined) you need to pony up the money to buy it - or convince the taxpayers to do it for you.
Coal ?
That was until the KELO decision. Now, you can't even buy it and be sure it is yours to protect. After all, a golf course provides better tax revenue than an unused pasture does.....