TY - RPRT TI - Probabilistic methodology for the assessment of original and recoverable coal resources, illustrated with an application to a coal bed in the Fort Union Formation, Wyoming AU - Ricardo A. Olea AU - Brian N. Shaffer AU - Jon E. Haacke AU - James A. Luppens PY - 2021 DO - 10.3133/tm6g1 UR - https://pubs.usgs.gov/publication/tm6G1 ID - tm6G1 ER -