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Lead, Zinc, Copper and the TariffBy Morris J. Elsing
FOR MANY YEARS lead and zinc have had the so-called protection of a tariff and it is the purpose of the following brief discussion to show what' such protection actually accomplishes with a view
Jan 1, 1932
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PART I – Papers - Sulfurization Kinetics of Delta Iron at 1410°CBy J. H. Swisher
The solubility of sulfur and rate of solution of sulfur in pure Lron were measured in H2S + H2 and H2S + H2 H2O gas mixtures. The solubility and diffusivity of sulfur at 1410°Care 0.13 pet S and 1.0 x
Jan 1, 1968
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Mining Methods at the Cerro de Pasco PropertiesBy V. L., McCutchan
FORM of ore bodies, strength of wall rock, and quantity of water that must be handled differ so greatly in the various districts in which the Corporation operates that a variety of mining methods have
Jan 1, 1945
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The Economic Size of the Open HearthBy F. A., King
THE problem of the proper size and capacity of the open-hearth furnace has been a predominant issue ever since its inception some sixty years ago. The original furnaces, built in 1868 at Landore, Engl
Jan 1, 1928
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Strip Coal Mining in the Southwest.By K. A. SPENCER
THE production of soft coal from strip mines in the United States has shown a remarkable growth in the last sixteen years, increasing from one and one-quarter million tons in 1914 to approximately twe
Jan 1, 1931
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Mine Explosions Not So Deadly in 1941By John T. Ryan
DEFINITE improvement in its accident fatality rate in the coal-mining industry was recorded during 1941, based on preliminary figures for the period from January through October. Total production duri
Jan 1, 1942
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The Institute Meets at PittsburghBy AIME AIME
THE official opening at the 134th general meeting of the Institute was held on Oct. 6, but it was prefaced by two round table conferences on Oct. 5. The open-hearth group held the fourth of their semi
Jan 1, 1926
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Miscellaneous Announcements (cf3982a7-b235-4012-bfaa-7c3686111f81)Meetings of this committee were held at the Institute headquarters on April 18, May 2 and 15, and June 19. At the meeting of June 19, the Secretary reported that letters of invitation to apply for me
Jan 7, 1913
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Mining Practice ? Improved Methods Cut Costs and Increase Ore Reserves - Mechanical Equipment Improves Workers? Efficiency ? Shaped Charges and Fusion Piercing Prove EffectiveBy Philip B. Bucky
WITH the exhaustion of the sections of iron ore bodies amenable to opencut mining the iron ore miners raise the question: "How can we mine the extensions of these ore bodies in depth with the same cos
Jan 1, 1947
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By-LawI PRESIDING OFFICER At all business meetings of the Institute the President, or, in his absence, the First Vice-President, or, in the absence of both of them, any other Vice¬ President or Director, c
Jan 1, 1923
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Institute of Metals Division - Determination of Diffusivity of Carbon in Tantalum and Columbium Carbides by Layer-Growth Measurements (TN)By R. Steinitz, L. Seigle, R. Resnick
THE rates of growth of the carbide phases MC and M2C in the Ta-C and Cb-C systems have been measured at various temperatures and the results used to estimate the rate of carbon diffusion within the in
Jan 1, 1965
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Qualifications For MembershipThe following petition for amendment of the constitutional provisions relating to qualifications for membership in the Institute, signed by 75 members, of whom 27 are members of the Committee on Incre
Jan 2, 1918
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39. Geology and Uranium-Vanadium Deposits in the Uravan Mineral Belt, Southwestern ColoradoBy E. Motica
Ores containing uranium and vanadium minerals have been mined from the Salt Wash Member of the Morrison Formation from many localities in the Colorado Plateau region since about 1900. The most product
Jan 1, 1968
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Sponge Iron and Its Relation to the Steel IndustryBy Edward P. Barrett
DURING the past few years numerous references have been made in the technical press and Bureau of Mines Bulletin 270 to sponge iron' and so-called "direct metal" processes. The idea has been prev
Jan 1, 1930
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PART IV - Papers - Slag-Metal Equilibria in the Pb-PbO-Sb2O3 SystemBy A. D. Zunkel, A. H. Larson
Equilibrium antimony contents of pb-sb alloys in contact with PbO-Sb2O3 slags containing less than 45 mole pct Sb203 uleve determined at 650', 700°, and 750°C in an inert atmosphere. In this ten~
Jan 1, 1968
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55. Geology of the Spar Mountain Beryllium District, UtahBy Daniel R. Shawe
Large tabular beryllium deposits in waterlaid rhyolitic tuff at Spor Mountain, Utah, contain the world's largest known resources of beryllium (as bertrandite). The district also has produced fluorspar
Jan 1, 1968
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Problems of Coal Production and UtilizationBy AIME AIME
COAL occupied a large place in the technical sessions of the Institute at its annual meeting for in addition to three sessions specifically de- voted to coal the two sessions on mine ventilation and t
Jan 1, 1929
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San Francisco Paper - Radiography of MetalsBy Wheeler P. Davey
In an article in the General Electric Review, January, 1915, reference was made to the X-ray examination of a steel casting 9/16 in thick. Fig. 1 shows one of the radiographs thus obtained. All these
Jan 1, 1916
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Field Observations of Electrical Resistivity and Their Practical ApplicationBy J. G. Koenigsberger
THE electrical specific resistance of rocks in the field is measured by sending a current through a medium of great volume, compared to the electrodes, whose resistivity should be measured. The whole
Jan 1, 1928
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Papers - Production - Domestic - Petroleum Development in Oklahoma in 1937By H. E. Rorschach
Activity in Oklahoma oil fields made 1937 one of the best years since 1926. During the year, 3454 wells were completed, an increase of about 25 per cent over the year 1936. Purchasers reports filed wi
Jan 1, 1938