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0.05 percent phosphorus 15.1 percent barium 4.4 percent 8.0 percent silica Air Tabling Barite barium and containing Barium and siliceous Bureau of Mines CD CO H cd H CD LO CD cd Ph CD rH coco combined magnetic concentrates combined magnetic fractions concentrates contained CX CX CX rH CXlO deslimed eg OTS gravity concen H cd H H rH H P cd H Ph high-intensity magnetic separation jig and table laboratory sintering machine Magnetic-Separation Tests manganese and assayed manganese flotation concentrates maximum Metallurgical Division OCO CD oleic acid Ore-Dressing Section percent iron percent manganese Ph rH portion pound of sodium Q'OOT Q1QQI represented 88.3 percent rH CD CD rH CX rH H rH rH Rolla S. M. Shelton shown in table siliceous gangue siliceous minerals snid sodium silicate SOTS specific gravity table concentrates total manganese UIAI UOTl^lOX