TY - BOOK AU - Lamont,W.E. AU - Sullivan,G.V. TI - Recovery of ultrafine barite from mill wastes T2 - Report of investigations / United States Dept. of the Interior, Bureau of Mines U1 - 661 PY - 1982/// CY - Avondale, Md. PB - U.S. Dept. of the Interior, Bureau of Mines KW - Barite KW - Recycling KW - Flotation ER -