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- Flotation of kyanite-quartzite rock, Graves Mountain, Lincoln County, Ga.
- Selective flotation of a barite-fluorspar ore from Tennessee
- Continuous flotation of beryl from spodumene mill tailing, Foote Mineral Company, Kings Mountain, N.C.
- Flotation of California mica ore
- Anionic-cationic flotation of mica ores from Alabama and North Carolina