Search U.S. government technical reports digitized or harvested by TRAIL.
Progress reports :metallurgical division.
Manganese investigations :metallurgical division.
Manganese investigations :metallurgical division.
Manganese investigations -metallurgical division.
Manganese investigations -metallurgical division.
Manganese investigations -metallurgical division.
Ore dressing investigation of oxidized lead ores from Missouri and Illinois
Investigation of ore-dressing methods for barite ores from New Mexico, Missouri, and Arkansas
Preliminary mineral-dressing investigation of East Texas brown iron ores
Experiments in concentrating lead sulfide slime
Recovering iron concentrates from the Pea Ridge deposit, central Missouri
Reduction roasting-acid solution techniques in laboratory processing of Minnesota manganiferous ores