Browse TRAIL Inventories

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

Investigation of the Benjamin Franklin graphite mine (government owned) and the Just graphite mine, Chester County, Pa.

Flotation of a North Carolina pyrophyllite ore

Ore-dressing tests of Aroostook County, Maine, manganese ores


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