Search U.S. government technical reports digitized or harvested by TRAIL.
Annual report of the nonmetals division, fiscal year 1940
Bentonite:its properties, mining, preparation, and utilization
Control of gelation in extraction of alumina from lime-soda-clay sinters
Production of lightweight concrete aggregates from clays, shales, slates, and other materials
Lime-soda sinter process for alumina from high-silica bauxites :laboratory and pilot-plant tests
Laboratory tests on percolation leaching of silica from bauxites
Soda sinter process for treating low-grade titaniferous ores