The market is killing coal, not regulation.  Yeah it was really bad for coal when we decided that acid rain killing forests was a bad idea but what has really done it in is fracking and the decline in the cost for natural gas.  Next we will have improvements in battery cost and technology that will make solar and wind for baseline production less expensive than coal even without subsidies.  The good news is that solar and wind are more labor intensive than coal.  The jobs are in the suburbs instead of the Power River basin so if you are a big fan of the rural economy you could be in for more hard times, but there are more jobs to be had from renewables.