This is certainly one of the dirtiest and generally nasty things talked about in the energy field today. The coal industry in the US is on it’s way out. This is a fact. And it is a fact that there are communities of people suffering because of that. A coal tax could be a answer to get the coal industry on the move. A move toward development of renewable energy and if instituted the socially responsible way could help this communities back on their feet. Read an article about this in USN.