From our very own, US, Energy Information Agency.
An excerpt:
"Coal-to-Liquids. A CTL plant transforms coal into liquid fuels. CTL is economically competitive at an oil price in the low to mid-$40 per barrel range and a coal cost in the range of $1 to $2 per million Btu, depending on coal quality and location."
Check any commodity price quote service - CNN has one. We're there. W
PS: Note the qualifying statement in the excerpted passage: "depending on coal quality and location". How much closer to the major Eastern Seaboard markets could our very-high quality WV bituminous be? A lot closer than the low-quality Dakota and Montana lignite that's on it's way to filling pipelines out west, it would seem obvious.