Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 218
192 ASSOCIATION OF ENGINEERING SOCIETIES. Ores of Radium and Associated Metals Four principal economic minerals containing" uranium, vanadium or radium may be mentioned. Patronite is a sul- phide of vanadium, containing" iron, sulphur, silica, molybde- num, nickel and vanadium. It is black to… … Carnotite Ore Ready for Sampling. taining as a mineral 18 to 25 per cent vanadium, as an ore 13 to 15 per cent vanadium, is found in Peru and mined by the American Vanadium Company at Minasraga, Peru, and brought to this country for the manufacture of ferro-vanadium. This mineral contains no…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
