Reply #2: I haven't seen any evidence for clean coal.

[Ozymanithrax]

Even if they can develop a method to sequester CO2 (they are doing a pilot project now) dumped into the atmosphere mining coal is a disaster and coal ash is massively toxic.

In order for there to be clean coal, you would need to sequester the CO2, come up with ways to get rid of all the ash, and find a way to mine it that doesn't leave ecological disasters everywhere.

Until I can see some way of dealing with all the problems of coal, from mining to ash to CO2, it is a fantasy.