Search U.S. government technical reports digitized or harvested by TRAIL.
Laboratory investigation of sulfurous acid leaching of kaolin for preparing alumina
Recovery of byproduct heavy minerals from sand and gravel operations in Oregon and Washington
Recovery of scheelite and byproduct sphalerite from western U.S. tactite ores
Recovery of tungsten from a hydrothermally altered deposit
Preparation of ammonium paratungstate from a sodium tungstate-sodium chloride phase