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Chicago Paper - Engineering Features of Modern Large Coal Mines in Illinois and Indiana (with Discussion)
By C. A. Herbert, C. M. Young
WithIn the past few years, considerable development has been made in the coal-mining industry in Illinois and Indiana and it is the purpose of the authors to record its most important phases. Perhaps
Jan 1, 1920
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Part IX – September 1969 – Papers - High-Speed Directional Solidification of Sn-Pb Eutectic Alloys
By J. D. Livingston, H. E. Cline
The lamellar-dendritic transition in Sn-Pb alloys near the eutectic composition has been studied at high growth rates. Lamellar structures were found over a substantial range of tin-rich compositions,
Jan 1, 1970
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Trends in the Junior Metal and Mineral Industries
By GUY C. RIDDELL, Donald M. Liddell
THE electronic arts today constitute the outstanding development in the field of rare metals, if not indeed in the arena of scientific progress at large. The year 1930 may become known as the year in
Jan 1, 1931
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The Present Radium Situation
By R. B. Moore
IN 1914 the writer and K. L. Kithil announced, through Bulletin 70 of the U. S. Bureau of Mines, that the United States possessed the largest deposits of radium-bearing ore in the world. At that time
Jan 1, 1930
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Influence of Base Metals in Gold Bullion Assaying
By Frederic Dewey
HAVING shown1 the difficulty of assaying so-called cyanide bullion and the extreme variations often found in the results, an investigation was undertaken to discover if possible the causes of these va
Jan 7, 1917
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Iron and Steel Division - Plastic Deformation Waves in Aluminum
By A. W. McReynolds
One characteristic of plastic deformation which distinguishes it from elastic strain is the essential inhomo-geneity of plastic strains. Elastic strain varies continuously through a material, and aver
Jan 1, 1950
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8. Titaniferous Ores of the Sanford Lake District, New York
By Stanford O. Grodd
The Sanford Lake district encompasses an area covering 24 square miles in the central Adirondack Mountains of northern New York State. Discovery of the titaniferous magnetite deposits dates back to 18
Jan 1, 1968
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Factors Affecting Investment in South American Mining - Peru
By NEWTON B. KNOX
PERU, lying south of Ecuador and having common frontiers with Brazil, Chile, and Bolivia, includes over a thousand miles of the Andean mountains. The coastal plain is arid and narrow and the Amazonian
Jan 1, 1945
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American Beginnings
By Thomas T., Read
ALTHOUGH the first colonists in the area that is now the A United States, whether Spanish, French or English in nationality, were usually keenly interested in the possibilities of mineral wealth, it i
Jan 1, 1941
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Part VIII – August 1968 - Papers - Hot Compression of Armco Iron and Silicon Steel
By J. J. Jonas, J. L. Uvira
Equipment was constructed which permitted the hot compression of 99.8 pct Armco iron and 2.8 pct Si steel at constant true strain rates of 0.05 to 1 per sec over the temperature range 600" to 1000°C.
Jan 1, 1969
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The Action of Various Commercial Carbonizing-Materials.
By ROBERT R. ABUOTT
(Cleveland Meeting, October, 1912.) THE practice of carbonizing steel for the purpose of case-hardening has assumed great commercial importance within the past, 10 years. Formerly, case-hardened ste
Dec 1, 1912
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Rock Classification From The Oil-Driller's Standpoint
By Knapp. Arthur
THE ORDINARY well log is subjected to a great deal of criticism, much of which is well founded. Sometimes, though, the difficulty in interpreting the log is due to the fact that the geologist or engin
Jan 2, 1920
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Technology, Economics, Government, and Progress
By Harold G. Moulton
IT is highly significant that engineers should seriously consider the interrelations of technology, economics, and government. It is indicative of the emergence of maladjustments and problems that per
Jan 1, 1938
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Saline Deposits of Western Utah
By J. L. SILSBEE
THE existence of large saline deposits in that flat arid basin, known as the Great Salt Lake Desert, has long been recognized, but the extent and great commercial value of these deposits has not been
Jan 1, 1925
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Communications - The Effect of Surface Removal on the Yield Point Phenomena of Metals – Discussion
By H. K. Birnbaum, H. B. Aaron
he authors suggest that a number of the types of yield phenomena which have been observed in high-purity fcc metals are due to dislocation interactions bccurring at the surface of the crystals rather
Jan 1, 1967
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Thompson Procedure - A Contrast For Mill Size Selection
By Richard A. Kesler, W. Michael Reed
Grindability or resistance to fine comminution is the fundamental issue involved in the application and sizing of grinding mills. Over the years, many theories for determining the amount of energy req
Jan 1, 1982
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Part IX - Papers - The Observation of Markers During the Oxidation of Columbium
By J. A. Roberson, Robert A. Rapp
From the observation of platinum wire marker movement in the oxidation of columbium at high lemperatures and low oxygen pressures, predonzinant cation diffusion in CbO, has been demonstrated. The Cu,0
Jan 1, 1968
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Trends in Opencut Iron Mining
By W. A. STERLING
IN the opencut iron mines of the Mesabi Range in Minnesota, the trend in mining is in the development of mining equipment and mining methods which will move surface overburden and ore-bearing material
Jan 1, 1948
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Institute of Metals Division - Systems Zirconium-Molybdenum and Zirconium-Wolfram (Discussion page 747)
By R. F. Domagala, M. Hansen, D. J. McPherson
On the basis of metallographic analysis, incipient melting data, thermal analysis work, and X-ray diffraction, phase relationships in the 0 to 50 atomic pct alloy content were carefully resolved. Phas
Jan 1, 1954
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Part II – February 1969 - Papers - Solid-Solution Strengthening in the Ag-Au System
By R. M. Asimow, J. J. Svitak
Tile crilical resoll,r,d shear stress, CRSS, for slip of slow1y cooled Ag-All single crystals was measured at 201K. Tlze importance of short-range order and Suzuki sogregalion was inrestigated by de
Jan 1, 1970