Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Modernizing the World's Largest Lead SmelterBy A. B. Parsons
LAST YEAR (1934) saw the completion of a ten-year program of reconstruction and modernization of the world's largest lead- smelting plant, that of the ' Broken Hill Associated Smelters Propr
Jan 1, 1935
-
Discussions - Of Mr. Webster's Paper on Specifications for Steel Rails (see p. 449)R. Trimble, Pittsburg, Pa (communication to the Secretary) : There are in the proposed specifications only two points on which I wish to comment at this time.
Jan 1, 1902
-
-
Productivity, Prices, and a Sound Wage Level - Economic Equilibrium Must Be Based on a Proper Correlation of These FactorsBy B. A. Stainton, John D. Gill
OUR combined economic activities have as their goal the maximum of individual well-being and national security. In this age of intense international competition the two objectives are closely related.
Jan 1, 1946
-
Petroleum Production - Foreign - Mexican Oil Fields during 1928By R. V. Whetsel, Valentin R. Garfias
Mexican petroleum production for 1928 was approximately 50,000,-000 bbl., the lowest in 12 years, showing a decrease from 1927 of over 14,000,000 bbl. The steady downward trend for the past 7 years ha
Jan 1, 1929
-
Minerals Beneficiation - Concentration of Silicate Minerals by Tetrabromoethane (TBE)By J. Mizrahi, A. M. Baniel, A. Mitzmager, S. Star
This article gives an account of the latest developments in the use of TBE for sink-float separation of silicate minerals. A number of minerals for which the process has been tested and found suitable
Jan 1, 1963
-
Virginia Beach Paper - Some Experiments for Determining the Refractoriness of Fire-Clays (see Discussion, p. 846)By H. O. Hoffman, C. D. Demond
There are two methods of determining the fusibility or refractoriness of fire-clays, the theoretical and the experimental. In the former, conclusions are drawn from the chemical composition; in the la
Jan 1, 1895
-
New York September, 1890 Paper - Latest Developments in Compressed-Air Motors for TramwaysBy D. S. Jacobus
COMPRESSED-air motors are specially desirable, if economically practicable, for underground haulage, because they require no fuel, involve no danger of fire, and not only avoid heating and fouling the
Jan 1, 1891
-
-
The Age Of Mineral CoalBy M. O. Holowaty, C. M. Squarcy
1750 to 1850: The scene shifts westward across the Alleghenys to the young town of Pittsburgh; charcoal gives way to mineral coal as furnaces grow larger and the blast is heated; above all, Pennsylvan
Jan 1, 1961
-
Technical Notes - Surface Properties of Silicate MineralsBy R. A. Deju, R. B. Bhappu
The basic structural unit of all silicate minerals is a tetrahedron with a silicon atom at the center and four oxygen atoms at the corners. The oxygen-silicon distance is about 1.6 & and the oxygen-ox
Jan 1, 1967
-
-
Geology and Mining of the Tin-Deposits of Cape Prince of Wales, AlaskaBy Albert Hill Fay
IN giving a sketch of the geology and mining of the tin-deposits of Cape Prince of Wales, a short description of the geographic and climatic conditions may be of special interest on account of this be
Sep 1, 1907
-
Ambrose Swasey John Fritz Medallist in 1924By John Fritz
THE John Fritz Medal was presented to Ambrose Swasey of Cleveland, Ohio, in the Auditorium of the Engineering Societies Building, in New York, on April 23. Charles F. Rand, Chairman of the Board of A
Jan 1, 1924
-
Fine-Grinding Cyanide Plant Of Barnes-King Development Co.By J. H. McCormick
THIS plant, near Marysville, Mont., was planned to treat the ore from the Piegan and Gloster mines, the latter being one of the early and famous producers of the Marysville district. When the mill was
Jan 8, 1918
-
Papers - - Produciton - Domestic- Oil and Gas Development in Illinois in 1934By Alfred H. Bell
Illinois produced 5 per cent more crude oil in 1934 than in 1933, because there was less curtailment, and. the value of the year's production at the wells was 35 per cent more than that of the pr
Jan 1, 1935
-
Papers - - Produciton - Foreign - Petroleum Development in Mexico during 1934By V. R. Garfias
Principal events in petroleum operations of Mexico during 1934 have been the completion of three producing wells in the Poza Rica area and the plans for the expansion of operations of the Cia. de Petr
Jan 1, 1935
-
The Changing Scene in Blasting – 1976 Jackling LectureBy Robert L. Akre
When Marco Polo visited China in the 13th century, no one knew what black powder was except the Chinese; they knew enough to make dazzling fireworks with it. But the realization that black powder cou
Jan 1, 1977
-
Carbocoal -Discussion (9162d9d3-f101-4a55-ad8d-07898ef2b6f6). F. W. SPERR, JR.,* Pittsburgh, Pa.--Mr. Malcolmson states that the Carbocoal process produces ammonium sulfate in excess of that normally recovered in the ordinary byproduct coke process. Table 3 in
Jan 11, 1918
-
Industrial Morale and Employees' MagazinesBy Daniel Bloomfield
ONE of the major problems of management is how to restore in some measure the personal relation-ship between employer and employed which, in the days of small concerns, meant better morale among emplo
Jan 9, 1922