"Ultrasonic assist in filtering neutralized mine water slurry. "; "Fairbanks, Harold Vincent, 1915-", "Hacket, William L."; "Coal preparation."; "Fairbanks, Harold Vincent, 1915-", "Hacket, William L."; "1975"; "Serial issue. Issued as: West Virginia University. Coal Research Bureau. Report, no. 117. "; ""; "P1948"; "pec"; "Coal preparation."; "14256"; .