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Semiquantitative spectrographic analysis of tungsten
Preparation of tungsten by reduction of tungsten hexachloride
Conversion of tungsten oxychloride to tungsten hexachloride by chlorination
Tungsten and dispersion-strengthened tungsten made by freeze drying
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
Tungsten and gold recovery from Alaskan scheelite-bearing ores