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Proposed Tariff on CopperBy E. E. AGGER, Arthur Notman
THE proposal has been made in a bill introduced into Congress at the last session by Representative Jones of Michigan that an import duty of 6 c. per lb. shall be placed on copper. This action is urge
Jan 1, 1925
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Milling Kentucky Fluorspar TailingsBy Robert R. Walden, LaMont West
KENTUCKY'S first acid-grade fluorspar flotation mill, shown in Fig. 1, was placed in operation Aug. 1, 1952, by the Pennsylvania Salt Manufacturing Co. at Mexico, Ky. During 1951 a critical short
Jan 5, 1954
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Alaska Coal-Land Problems.By H. Foster Bain
(San Francisco Meeting, October, 1911.) [SECRETARY'S NOTE.-This paper, presented in oral abstract, at the San Francisco meeting, was not at first supposed by Mr. Bain to be required for publicat
Aug 1, 1912
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Future of Coal for Railway FuelBy Eugene McAuliffe
AS anthracite is no longer used to a marked extent by the rail- ways of the United States (1,513,000 tons in 1933), that portion of the mining industry engaged in the production of bituminous coal is,
Jan 1, 1936
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PART VI - Strain-Enhanced Self-Diffusion in SilverBy G. L. Fisher, R. Maddin
The rate of self-diffusion in silver single crystals during torsional strain was measured over a wide range of tenperatures and strain rates. The torsional strain was applied in a cyclic manner by rev
Jan 1, 1967
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Instrumentation In Ideal's New Houston Cement PlantBy Thomas B. Douglas
INSTRUMENTATION in the process industries can no longer be regarded as a convenience, but rather an absolute necessity. Although many chemical processes must already be conducted with instruments, eve
Jan 2, 1958
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New York Paper - Grain Growth in Silicon Steel (with Discussion)By W. E. Ruder
It has been pointed out by Stead1 that grains of considerable coarseness may be developed in steels containing from 3 to 5 per cent. of silicon, and in a previous paper2 the present author has shown t
Jan 1, 1914
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Industrial Minerals - Instrumentation in Ideal's New Houston Cement PlantBy Thomas B. Douglas
INSTRUMENTATION in the process industries can no longer be regarded as a convenience, but rather an absolute necessity. Although many chemical processes must already be conducted with instruments, eve
Jan 1, 1959
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Ore Deposits As Related To Stratigraphic, Structural And Igneous Geology In The Western United StatesBy B. S. Butler
PART I SUMMARY CERTAIN relations between the formation of ore deposits and other geological processes are pretty generally accepted, namely: that many ore deposits are closely associated with ig
Jan 1, 1933
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Papers - Precipitation-hardening and Double Aging (With Discussion)By R. H. Harrington
The definition of precipitation-hardening1 is well understood and its principles have been subjected to study for some time. However, the variation of properties with double aging, combined with strai
Jan 1, 1937
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The Ultimate Source Of Ores.By Charles R. Keyes
the leaching of near-by rocks, had had no other result than to bring out from obscurity three certain features of practical lmport, all the labor of that controversy would have been well expended. Th
Jul 1, 1910
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The Iron-Ore Deposits Of The Moa District, Oriente Province. Island Of Cuba.By Jennings S. Cox
(Glen Summit Meeting, June, 1911.) THE following notes, prepared in 1908, as the result of a personal examination and extensive explorations under my direction in 1906, have been revised and greatl
Mar 1, 1911
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UranatesBy William E. Ford, Edward Salisbury Dana
URANINITE. Cleveite. Broggerite. Nivenite. Pitchblende. Isometric. In octahedrons (o), also with dodecahedra1 faces (d) ; less often in cubes with o and d. Crystals rare. Usually massive and botryoida
Jan 1, 1922
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The Gamma-Alpha Transformation In Pure IronBy Albert Sauveur
THE senior author of this paper has expressed the belief that when gamma iron transforms into alpha iron on reaching the A3 point, each gamma grain does not change bodily into one or more alpha grains
Jan 1, 1929
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New York Paper - Effect on Steel of Variations in Rate of Cooling in Ingot Molds (with Discussion)By William J. Priestley
Much time has been devoted, by metallurgists, to the study of steel after solidification and remarkable strides have been made in the heat treatment of steel, but less knowledge is available of the th
Jan 1, 1924
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Papers - Production - Foreign - Development of Oil-field Activities in Argentina during 1940By Mario L. Villa
Argentina's oil production continues in its upward trend. The year 1940 closed with an important increase over 1939; that is, 1,996,371 bbl., or 10.72 per cent. The Government oil fields (Y.P.
Jan 1, 1941
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Papers - Production - Foreign - Development of Oil-field Activities in Argentina during 1940By Mario L. Villa
Argentina's oil production continues in its upward trend. The year 1940 closed with an important increase over 1939; that is, 1,996,371 bbl., or 10.72 per cent. The Government oil fields (Y.P.
Jan 1, 1941
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Biographical Notice Of Charles B. Dudley, Ph.D.By R. W. Raymond
(Pittsburg Meeting, March, 1910.) IN the long list of our illustrious and lamented dead, there are names which recall personality as well as career and achievement; social as well as scientific merit
Jun 1, 1910