Search U.S. government technical reports digitized or harvested by TRAIL.
Differential grinding of Alabama iron ores for gravity concentration
Rapid specific-gravity method for estimating the iron content of Birmingham, Ala., red ores
Exploration of tailing ponds in the Russellville, Ala., brown-ore district
Alabama red iron ores :Greasy Cove and Shinbone Ridge, St. Clair and Etowah Counties