Of course the environment can be restored. We have been mining and restoring the environment in Alaska for decades. Usibelli coal mine is just outside of Denali National Park, and most visitors to the park aren't even aware its exists. The environment around the park has been completely restored.
Usibelli Coal Mine - Restoration
Apparently the people don't want to heat or power their homes any longer either.
The fly ash produced by burning coal is ~10 times more radioactive than normal coal, but it is not anywhere nearly as radioactive as nuclear waste. Radiation levels in the soil around coal powered power plants will be between 50% and 200% more radiation than the soil taken from around nuclear facilities. The fly ash can be contained within the facility and disposed of properly, like any other radioactive material. It does not need to be dispersed, but that requires government regulation.
Like I said, coal power plants can be made to produce power cleanly.