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RI 6400 Stress Determinations by Flat jack and Borehole-Deformation MethodsBy Robert H. Merrill, James V. Williamson, David M. Ropchan, George H. Kruse
In- situ rock stresses were determined by flatjack and borehole - deformation methods . Estimates of the stress distribution around a flatjack were obtained by a combination of flatjack and borehole -
Jan 1, 1964
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RI 6218 Mount Gran Coal Deposits, Victoria Land, AntarcticaBy John J. Mulligan
The Bureau of Mines investigated coal deposits at Mount Gran (latitude 76°59' S, longitude 161°07' E), Victoria Land, Antarctica, during the austral summer of 1959-60 as part of the continui
Jan 1, 1963
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RI 5054 Lessons From Intensive Dust Sampling Of A Coal Mine ? IntroductionBy Irving Hartmann
The Bureau of Minas has been charged by the Congress with the responsibility for administrating the provisions of the Federal Coal-Mine Safety Act. One of the important duties of bureau inspectors und
Jan 1, 1954
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RI 3410 Porosity Of The Sundance Sand In The Lance Creek Oil Field, Wyoming ? IntroductionBy H. Dale Nichols
[The growing importance of the Sundence (Jurassic) formation an a source of oil, in the Rocky Mountain area has prompted the making of a series of porosity determinations of core samples collected. fr
Jan 1, 1938
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IC 6134 Safeguarding Electrical Equipment Used In Gassy Mines European Practice: I - Great Britain ? IntroductionBy L. C. IlsLey
Cooperation between the United States Bureau of Mines and the Safety in Mines Research Board of Great Britain, continuous since 1924, has made possible this and other papers on safety subjects. Gratef
Jan 1, 1929
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RI 4650 Investigation Of The Rose Run Iron Area Bath County, Ky.By Neal M. Muir
The increasing demand for iron ores prompted the Bureau of Mines to investigate the sources of past production in Kentucky to determine whether reserves of usable ore still exist. Preliminary investig
Jan 1, 1950
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RI 8866 - A Basic Chloride Method for Extracting Aluminum From ClayBy P. R. Bremmer
As part of a program to devise alternative technologies for producing alumina from domestic resources, the Bureau of Mines investigated the leaching of calcined kaolinitic clay to form basic aluminum
Jan 1, 1984
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RI 5100 Improved Tungsten Carbide-Cobalt Compacts By Electric-Resistance Sintering - IntroductionBy Perry G. Cotter
As a portion of a general program for the synthesis of hard materials, a method was sought by which the hardness and density of tungsten carbide (WC)-cobalt compacts could be increased. It was demonst
Jan 1, 1955
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RI 5771 Laboratory Concentration Of Seven Titanium-Bearing Ores Of The Pacific Northwest ? Introduction And SummaryBy J. W. Town
As part of the Federal Bureau of Mines titanium resources examination program, samples from seven deposits in the Pacific Northwest were tested for amenability to various beneficiation techniques. The
Jan 1, 1961
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RI 3662 Lamallar Grading of Powdered MicaBy Oliver C. Ralston, Foster Fraas
"INTRODUCTION The predominant characteristic of powdered mica is the thin -plate shape of the particulars, and the thinner the plates, the more enhanced is this characteristic. Consequently, it is fre
Sep 1, 1942
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RI 5634 Vapor Pressures of Liquid Manganese and Liquid SilverBy P. L. Woolf, J. P. Morris, E. Foerster, G. R. Zellars
Measurements of vapor pressure can be used to determine the thermodynamic activities of the components of metallic solutions . The determination of activity by this method requires accurate values for
Jul 1, 1960
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RI 9601 - Ion Elutriation Of Silver And Free Cyanide From WastewaterBy F. H. Nehl
Ion elutriation was used to extract silver cyanide complexes and free cyanide from aqueous streams containing up to 10 ppm silver and 5 ppm free cyanide. Screening tests selected nine of 350 different
Jan 1, 2010
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RI 6007 Carbon Formation In Very Rich Hydrocarbon-Air Flames ? Introduction And SummaryBy Joseph M. Singer
This research project had two main objectives: (1) To identify the smoke limits of gaseous fuel-air mixtures and (2) to obtain and evaluate basic chemical information on the formation of smoke in very
Jan 1, 1962
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IC 6100 Electrical Accident PreventionBy L. C. IlsLey
The first thing to consider in prevention of electric shock is the voltage of the circuit. No person can be sure that he will not be killed, even from a 110-volt circuit, if he makes proper contact wi
Feb 1, 1929
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RI 2447 Gasoline Saved on Government Trucks by Adjusting Carburetors by Exhaust-Gas AnalysisBy W. A. Dunkley
During the past year and a half the Western United Corporation of Aurora , Illinois , has been distributing carburetted water ges from its Lockport , Ill . , plant , to an extensive territory , under
Feb 1, 1923
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RI 8001 Engineering Properties of Fiber-Reinforced and Polymer-Impregnated ShotcreteBy M. E. Poad
Structural properties of steel-fiber-reinforced shotcrete and polymer-impregnated shotcrete, both plain and fiber-reinforced, were investigated by the Federal Bureau of Mines, Spokane Mining Research
Jan 1, 1975
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RI 2984 A Diaphragm Or "Breather" Roof For Oil-Storage Tanks ? IntroductionBy Ludwig Schmidt
The economic value of reducing the evaporation losses of crude oil and of gasoline is so well founded that the petroleum industry is constantly seeking new and improved storage tanks and methods of ha
Jan 1, 1930
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RI 8087 Studies of Sand-Sulfur-Asphalt Paving MaterialsBy T. A. Sullivan
The use of sulfur combined with either sand or waste copper tailings was investigated by the Bureau of Mines as a substitute for a good graded aggregate in asphalt paving materials. The research was p
Jan 1, 1975
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Simulating spon com - Looking at CFD modeling of spontaneous heating in longwall gob areasBy Liming Yuan
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Jan 1, 2009
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RI 5561 Geologic Factors Related To Block Caving At San Manuel Copper Mine, Pinal County, Ariz. - 2. Progress Report, April 1956 - March 1958 ? Summary And ConclusionsBy E. D. Wilson
This is the second of a series of progress reports describing work undertaken at the San Manuel copper mine to study the geologic factors influencing block caving of the deposit. The first report desc
Jan 1, 1960