In connection with its continuing studies of the characteristics of alloys and alloying elements, we investigated the crystal structure of fused boron. This Boron Crystallography
Results of this study demonstrate that multiple-oxide minerals can be processed to usable compounds by the techniques described in this paper. The chlorination procedure offers
Laboratory results of fused salt-bath electrolysis indicate that recovery of crystalline tungsten metal from scheelite may be commercially feasible; that purity of the product, although
The principal ore deposits occur in the bands and isolated pods of tactite adjacent to the granite on the west side of the south stock.
The experimental results appear to support two principal conclusions: First, the three natural and three synthetic slurries tested all exhibited individual filtration characteristics and individual
Gypsum and its products are economical materials in their respective fields. Lime and hydraulic cement plasters compete to a limited extent with gypsum in the
Until several years ago the fluorescent X-ray spectrographer was limited to the K series for elements of atomic numbers 22-60 and to the L series
A major overall objective of the Bureau’s research program on rare-earth elements is to make ultrapure individual rare-earth metals and compounds and to determine some
Interest in the separation, purification, reduction, and metallurgy of the various lanthanide rare-earth elements has necessitated developing sensitive and flexible instrument-analysis techniques . The widely
Bastnasite rare earths are now being utilized to a limited extent as a source of rare-earth materials used in the steel industry; but advances in