TY - RPRT TI - Chemical analyses of lignite from the Fort Union Formation, McCone, Richland, Dawson, and Wibaux counties, Montana, and Golden Valley County, North Dakota AU - Ronald H. Affolter AU - Joseph R. Hatch PY - 1980 DO - 10.3133/ofr80179 UR - https://pubs.usgs.gov/publication/ofr80179 ID - ofr80179 ER -