TY - RPRT TI - Resource assessment of the Springfield, Herrin, Danville, and Baker coals in the Illinois Basin AU - Joe Hatch AU - Russ Jacobson AU - Maria Mastalerz AU - William Andrews AU - Jerry Weisenfluh AU - Ron Affolter AU - Greg Gunther PY - 2002 DO - 10.3133/fs07202 UR - https://pubs.usgs.gov/publication/fs07202 ID - fs07202 ER -