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Manganese investigations :metallurgical division.
A vibrating screen surface for the removal of flat and elongated pieces from crushed stone
Pilot-plant production of high-grade magnetite concentrates, Cranberry, N.C.
Beneficiation of New England beryllium ores
Flotation of a North Carolina pyrophyllite ore
Ore-dressing tests of Aroostook County, Maine, manganese ores