How "clean" is taking off the top of a mountain for coal? Compare the costs of restoring a mountain after we tear it down, extract the coal and burn it into th

How "clean" is taking off the top of a mountain for coal? Compare the costs of restoring a mountain after we tear it down, extract the coal and burn it into the atmosphere. How much will that cost? What about moving cities inland? will that be more expensive than recycling solar panels? There is no perfect energy system, but the status quo is clearly unsustainable, and solar disposal is a much more tractable problem than destructive extraction and atmospheric pollution.