I'sorry that I won't have time to ssek it out for you for the next few days,
but here in the U.K. there is a Mining History Society, NAMHO. When I last
looked at their website there were a number of links to North Amerian mining
history society sites. A 'mining+history+coal' search ought to bring them up
rapidly. If this proves fruitless, come back and I'll search through the
Namho link at this end.
Best wishes, Silas.