Illinois Coal Data goldmine

http://www.isgs.uiuc.edu/maps-data-pub/coal-maps.shtml is an amazing resource of Illinois coal mining data.

However, If you go here http://www.isgs.uiuc.edu/maps-data-pub/publications/coal-pubs/quality.shtml, there is a wide variety of coal topics. At the bottom on Reports, there is a 4 part series on the effect of lab results correlation with domestic stoker performance. Pretty good stuff. Maybe not of interest to the "anthracite heads", but I find it interesting as I live pretty much on top of a LOT of this coal.