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Block-Signal And Dispatching Systems In Metal Mines
By R. T. Murrill
BLOCK-SIGNAL and dispatching systems have been in use on surface railways for years, but only recently have they been applied to underground mining conditions. Formerly, all ore was moved underground
Jan 2, 1922
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The Solidus Line In The Lead-Antimony System
By Earle Schumacher
THE solidus line above the solid solution field in the lead-antimony system was originally determined by Dean and his associates1 from heating curves. They did not regard this line as having been accu
Jan 1, 1927
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The Investigations Of Fuels And Structural Materials By The Technologic Branch Of The United States Geological Survey.*
By Joseph A. Holmes
I. INTRODUCTORY. THE plans for the investigation of fuels and structural materials now being conducted by the Technologic Branch of the United States Geological Survey were, before being decided upon
Jan 7, 1908
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Foreign Mining As A Specialty
By Samuel Lasky
WITH the movement of American capital into foreign investment, a new field of specialization for the American mining engineer is gradually opening a field hitherto entered almost wholly by chance and
Jan 1, 1927
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Drilling-Equipment, Methods and Materials - The Simulation of Percussion Drilling in the Laboratory By Indexed-Blow Studies
By H. L. Hartman
The drop tester has proved an invaluable tool for the investigation of percussion drilling in the laboratory in "slow motion". It has allowed the process of rock penetration by impact to be studied a
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Observations On Requirements Of Refractories For Open Hearth
By F. W. Davis
This paper deals in a general way with certain of the necessary requirements of refractories for the open-hearth furnace. The refractories in common use for the different parts are discussed both as t
Jan 3, 1924
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Institute of Metals Division - Discussion: Yield Point and Easy Glide in Silver Single Crystals
By Joachim J. Hauser
William F. Hosford, Jr. (Massachusetts Institute of Technology)—Dr. Hauser has used a very interesting method to study the interaction of dislocations on different slip systems, but it should be point
Jan 1, 1962
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Pressure Operation Of The Pig Iron Blast Furnace And The Problem Of Solution Loss
By Julian M. Avery
IN its dual role of pig-lion smelter and gas producer, the blast furnace is a remarkably satisfactory and efficient apparatus Many metallurgists and engineers have pointed out, however, that since the
Jan 1, 1938
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Safety in Mines
By J. V. W. REYNDERS
IN THE remarks which I am about to make concern¬ing the safety work of the Bureau of Mines, I want first of all to disengage myself from a disposition, which is frequently in evidence, to give spectac
Jan 1, 1925
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Papers - Production - Domestic - Oil and Gas Developments in the Rocky Mountain District in 1940
By C. E. Shoenfelt
There was a notable decrease in drilling operations in 1940 in all of the Rocky Mountain states except Montana, where the two large fields on the Canadian border, Cut Bank and Kevin-Sunburst, were esp
Jan 1, 1941
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Production - Domestic - Oil and Gas Fields of Kansas during 1943
By W. A. Ver Wiebe
Spurred on by the very high demands for new crude supplies resulting from World War 11, the oil men of Kansas strained every effort in 1943 to find as many new pools as possible. In all, 1761 test wel
Jan 1, 1944
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Papers - Production - Domestic - Oil and Gas Developments in the Rocky Mountain District in 1940
By C. E. Shoenfelt
There was a notable decrease in drilling operations in 1940 in all of the Rocky Mountain states except Montana, where the two large fields on the Canadian border, Cut Bank and Kevin-Sunburst, were esp
Jan 1, 1941
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Production - Domestic - Oil and Gas Fields of Kansas during 1943
By W. A. Ver Wiebe
Spurred on by the very high demands for new crude supplies resulting from World War 11, the oil men of Kansas strained every effort in 1943 to find as many new pools as possible. In all, 1761 test wel
Jan 1, 1944
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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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Methods of Research Newly Applied to Refractories
By William F. Boericke
THERE was a time when the selection of fire brick was .left to the judgment of the head bricklayer of the plant, whose choice was not unaffected by a box of Christmas cigars from a friendly salesman.
Jan 1, 1929
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Institute of Metals Division - The Comparative Creep Properties of Several Types of Commercial Coppers
By A. D. Schwope, L. R. Jackson, K. F. Smith
Burghoff and Blank1 have pointed out that the creep properties of hard-drawn coppers are closely associated with their individual softening characteristics and have further shown that the creep resist
Jan 1, 1950
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Laboratory Experiments in Lime-Roasting a Galena Concentrate with Reference to the Savelsberg Process
By W. S. CAYPLESS, H. O. Hofman, E. E. HARRINGTON
I. INTRODUCTION. LIME-ROASTING is a term proposed by Ingalls 1 for the operation of forcing air under pressure through a mixture of galena and lime at the kindling-temperature with the object of oxid
Jan 1, 1907
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Metallurgical Practice In The Witwatersrand District, South Africa (f815f882-6744-40ed-8a79-495e4279e327)
By F. L. Bosqui
Discussion of the paper of F. L. Bosqui, presented at the San Francisco meeting, September, 1915, and printed in Bulletin No. 101, May, 1915, pp. 997 to 1033. H. A. WHITE, Springs, Transvaal (commun
Jan 1, 1916
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Papers - Steelmaking - Significance of the Bessemer End Point (T.P. 1428, with discussion)
By H. T. Bowman
For more than 80 years the Bessemer process has depended upon the ability, skill, and judgment of the blower, although as early as the I860's it was recognized that the process would benefit by s
Jan 1, 1942