TY - GEN AU - Busch,R.A. AU - Backer,R.R. AU - Atkins,L.A. ED - United States. TI - Physical property data on coal waste embankment materials T2 - Report of investigations PY - 1974///] CY - [Washington] PB - U.S. Dept. of the Interior, Bureau of Mines KW - Coal mine waste KW - Spoil banks KW - Coal preparation ER -