West Virginia, where I am from and currently live, has been under a lot of heat via clean coal technology, and has put a fair few miners out of work.
Where I lived, in Clay County, West Virginia until last June, there is a population of just under 10,000. There is plenty of coal in the county, but a few years ago, the main coal mine in that county shut down due to some of the regulations (as well as general expenses) that the company could not simply follow.
The county lost over 500 jobs and now has one of the highest unemployment rates in the state.
Again, I live in West Virginia. I worked in a sustainability department for four years, and I realize how important it is to try and recycle when possible, to appreciate and respect our surroundings, and to do our part to try and sustain it for future generations.
The problem that I have with clean coal technology right now is that we do not have the infrastructure for it. Many of these coal companies in West Virginia simply do not have the money to work on new technology on how they mine, extract, and transport coal. I hope that they do soon, or that it becomes easier to transition.
For a place like West Virginia, coal is very important. It would be nice to see a diversification occur in our economy (another discussion), but for now, coal has remained king in the state, though that is changing quickly. Literally tens of thousands of coal miners have lost their jobs in this state alone in the last ten years - Clay County's population dropped over 9% in only 10 years from 2000-2010.
I personally do think that there is a certain amount of impact from humankind that is causing global temperatures to increase. I don't think there is any doubt that the globe is exactly increase - just exactly why is still yet to be determined. What amount of cause is natural? Caused by mankind?