I was using a conservative number, but yours makes my case even moreso.

From an industrial perspective, coal may not be ideal for a few regulatory reasons. But from an individual consumer position, especially in terms of subsistence and/or survival, coal makes a lot of practical sense.
_________________________
The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)