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Lake Superior Paper - The Effect of Silver on the Chlorination and Bromination of GoldBy M. G. Magnuson, H. O. Hofman
When dry chlorine gas is made to act in the cold upon fiuely-divided gold,' it converts the latter with evolution of heat into auro-auric chloride, Au4 Cl4, a hard, dark-red, hygroscopic salt. Mo
Jan 1, 1905
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Institute of Metals Division - Diffraction Patterns and Crystal structure of Si3N4 and Ge3N4 (Correction, p. 316)By W. C. Leslie, R. M. Fisher, K. G. Carroll
A nitride, believed to be Si3N, has been separated from three nitrided silicon steels. Germanium nitride, Ge3N4, has been prepared from pure germanium. Comparison of the diffraction patterns indicates
Jan 1, 1953
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Symposium On Prospecting For PhosphateBy James A. Barr
[CONTENTS PAGE Foreword. By JAMES A. BARRI A New Core Barrel for Prospecting for Phosphate in Florida. By I. M. LEBARON 2 Prospecting for Phosphate in Tennessee. By W. F. GUENTHER 6 Machine Prosp
Jan 1, 1947
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New Process For Copper Anode Slime Treatment At The Hitachi Smelter & RefineryBy Junichi Sato, Takash Suzuki, Tatsuo Imamura, Mamoru Hojo
INTRODUCTION Hitachi Refinery of Nippon Mining Co., Ltd. was constructed in 1911. The refinery began early to recover by-product metals and to manufacture copper products. Today, the refinery reco
Jan 1, 1976
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New York Paper - Economic Application of Zonal Theory of Primary Deposition of Ores (with Discussion)By John Carter Anderson
The theory of a zonal deposition of ores from ascending solutions which were differentiation products of a cooling magma, first propounded by Spurr,l in a measure explained by Lindgren,2 and recently
Jan 1, 1923
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New York Paper - Economic Application of Zonal Theory of Primary Deposition of Ores (with Discussion)By John Carter Anderson
The theory of a zonal deposition of ores from ascending solutions which were differentiation products of a cooling magma, first propounded by Spurr,l in a measure explained by Lindgren,2 and recently
Jan 1, 1923
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The Iron-Tungsten SystemBy W. P. Sykes
IN CONNECTION with a study of tungsten steels, Honda and Murakami1 reported an investigation of the system iron-tungsten. This report included a tentative equilibrium diagram, photomicrographs of vari
Jan 2, 1926
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Logging - The Laterolog: A New Resistivity Logging Method with Electrodes Using an Automatic Focusing SystemBy H. G. Doll
A new electrical logging method called Laterolog is described which provides for better recording of formation resistivity. In this method a current, preferably of constant intensity, is forced into t
Jan 1, 1951
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Logging - The Laterolog: A New Resistivity Logging Method with Electrodes Using an Automatic Focusing SystemBy H. G. Doll
A new electrical logging method called Laterolog is described which provides for better recording of formation resistivity. In this method a current, preferably of constant intensity, is forced into t
Jan 1, 1951
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TalcBy Richard H. Olson, Lawrence A. Roe
Talc, when it can be isolated as a pure mineral, has a composition of 63.36% Si02, 31.89% MgO, and 4.75% H20. However, as an industrial commodity, talc rarely approaches theoretical purity. Neverthele
Jan 1, 1983
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Coal - Pulverized Coal as Fuel for Copper-refining FurnacesBy E. S. Bardwell, Roy H. Miller
During the period extending from May, 1922, to September, 1923, the copper-refining furnaces of the Great Falls Reduction Department of the Anaconda Copper Mining Co. at Great Falls, Mont., were opera
Jan 1, 1927
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PART VI - Communications - On Apparent Pore Formation During Cellular SolidificationBy H. Biloni
PORE formation during solidification has recently been studied theoretically by Piwonka and Flemings.1 For the ordinary conditions of cellular solidification, these authors state that there is a diffi
Jan 1, 1968
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New York Paper - Silicon in Cast-Iron (Analytical Determinations by H. S. FLEMING and EDWARD ORTON, JR.)By W. J. Keep
Cast-iron, or pig-iron, is iron which contains all the carbon that it could absorb during its reduction in the blast-furnace. As is well-known to chemists, carbon exists in cast-iron in two distinct f
Jan 1, 1889
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St. Louis Paper - A Few Notes on the Future Work of the Petroleum Geologist in the Mid-Continent Oil FieldsBy Dorsey Hager
The possibilities of finding new oil pools in Oklahoma and Kansas are far from promising. In 1916, the only new pools of importance were the Franchot pool near Bixby, the Garber, and the Billings p
Jan 1, 1918
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A Few Notes, On The Future Work Of The Petroleum Geologist In The Mid-Continent Oil FieldsBy Dorsey Hager
THE possibilities of finding new oil pools in Oklahoma and Kansas are far from promising. In 1916, the only new pools of importance were the Franchot pool near Bixby, the Garber, and the Billings poo
Jan 10, 1917
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New York Paper - Comparative Notes on Steel-Rail RollingBy Robert W. Hunt
I have frequently stated that while the chemical composition of steel is important, yet even greater importance is connected with the mechanical and heat treatment of the metal. During the past year I
Jan 1, 1914
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Technical Notes - A Subsurface FlowmeterBy R. C. Rumble
To /neet the need for a subsurface flowmeter capable of measuring low rates of flow, a new type flowmeter has been built and tested in the field. This instrument is self-contairzed, can be run on a wi
Jan 1, 1956
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Extractive Metallurgy Division - Preparation of High Purity ZrCl4 from Alkali ChlorozirconatesBy R. V. Horrigan
High purity ZrC14 (25 to 200 ppm of metallic impurities) can be readily prepared in simple apparatus by thermal decomposition of alkali chlorozirconate fused salts at 500° to 600°C and at atmospheric
Jan 1, 1956
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Institute of Metals Division - Observations on the Niobium (Columbium)-Hydrogen SystemBy W. J. Babyak, J. M. Sheehan, H. W. Paxton
THE- solubility of hydrogen and deuterium in solid niobium up to I-atm pressure has been established bv a number of workers.1-5 X-ray examination at room temperature of specimens reacted in hydrog
Jan 1, 1960
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Geology of the Molybdenite Deposits at Climax, Colorado, and of Other Deposits Producing MolybdeniteBy John Vanderwilt
THE value of molybdenum as a ferroalloy has been known for many years. For a long time, however, the metal was used only on a small scale in the iron industries, because the known source of supply app
Jan 1, 1932