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RI 5867 Factors Influencing The Incendivity Of Permissible Explosives: Ammonium Nitrate And Carbonaceous Material ? IntroductionBy N. E. Hanna
An important goal in the development of coal mining explosives has been to improve their safety characteristics through suitable formulation. In the United States no systematic effort to establish fac
Jan 1, 1961
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RI 9359 - A Mass Spectrometer Method for Determining Helium in the Parts-Per-Million to 10-Percent RangeBy Phillip W. Holland
The U.S. Bureau of Mines has developed a mass spectrometer method for determining helium in the parts-per-million to 10% range to an accuracy of ± 1%. The method employs a mass spectrometer, an inlet
Jan 1, 2010
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RI 9671 - Self-Contained Self-Rescuer Long Term Field Evaluation Combined Eighth And Ninth Phase ResultsThe National Institute for Occupational Safety and Health (NIOSH) National Personal Protec-tive Technology Laboratory (NPPTL) and the Mine Safety and Health Administration (MSHA) conduct a Long Term F
Jan 10, 2006
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Alnminosilicate Surface Contamination of Respirable Quartz Particles from Coal Mine Dusts and From Clay Works DustsBy R. L. Grayson, W. E. Wallace, M. D. Attfield, A. Q. Wearden, P. Bolsaitis, R. D. Kennedy, M. J. Keane, J. C. Harrison
"Respirable high-silica particles from four coal mines. a clay mine and a tunnelling site were analysed for silicon vs aluminum composition by performing scanning electron microscopy-energy dispersive
Dec 1, 1995
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Field Evaluation Of Mobile Roof Support TechnologiesBy John Owens, Marc Endicott, Hamid Maleki
This study presents a historic overview of the role of mobile roof support (MRS) technologies in improving stability and worker safety and presents the results of recent field evaluations of the MRS l
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RI 7648 Use Of Composite Diaphragms In The Electrowinning Of TitaniumBy O. Q. Leone
Composite diaphragms were used in the investigation of electrowinning Ti from TiC14 in a fused LiCl-KCI-TiC'2 electrolyte. Composite diaphragms tested were of two general classes--those consistin
Jan 1, 1972
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RI 9496 - Electrolytic Cleaning And Conditioning Of Gold Redox Probes In Flotation CircuitsBy William K. Tolley
The U.S. Bureau of Mines (USBM) is currently investigating the electrochemistry of mineral flotation. A significant need in this area is greater reliability of sensors. The USBM is testing electrolyti
Jan 1, 2010
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RI 4821 Raw Materials For The Mineral-Wool IndustryBy C. H. Gorski
Evaluation of raw materials for mineral wool is one phase of the Bureau of Mines broad program for the more effective utilization: of our mineral resources. The experimental work and test-evaluation r
Jan 1, 1951
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RI 8882 - Corrosion Rates of Grinding Media in Mill WaterBy W. K. Tolley
This report presents data collected during research by the Bureau of Mines on corrosion of grinding media. Corrosion rates of eight alloys commonly used in grinding media were tested in synthetic mill
Jan 1, 1984
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RI 9010 - An Improved Analyzer for Determining Helium-4 in Parts-Per-Billion RangeBy Charles Seitz
The Bureau of Mines has modified its parts-per-billion helium-4 analyzer to improve the analytical capabilities of the instrument. The modifications resulted in the following improvements: (1) The ana
Jan 1, 1986
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Ground Wire Monitors For Surface Coal M'inesBy W. L. Cooley, K. Y. Lee, M. M. Hassan
Because power system topographies for surface coal mines are significantly different from those for underground coal mines, the requirements for ground wire monitors for surface systems are somewhat d
Jan 1, 1979
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RI 3411 Tests Of A Barrier Using Rock Dust In Paper Bags ? Origin Of InvestigationBy H. P. Greenwald
About mid-December 1936, the safety director of a large coal corporation visited the authors at the Bureau's Experimental coal mine to discuss a rock-dust barrier he had invented primarily for us
Jan 1, 1938
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RI 9487 - A Data Acquisition and Analysis System for Nondestructive Testing of Wire RopeBy Todd M. Ruff
Current methods of inspecting wire rope for broken wires or excessive wear include visual inspection, physical measurements of rope diameter, and electromagnetic nondestructive testing (NDT). Visual i
Jan 1, 2010
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RI 9114 - Probability of Resistive Spark Ignition Caused by Very Low CurrentsBy James C. Cawley
The Bureau of Mines has empirically determined ignition probability versus current for resistive circuits in an 8.3% methane-air atmosphere. Simple ignition probability, defined as the number of ignit
Jan 1, 1987
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IC 8219 Potential Of Nuclear Explosives For Producing Hydrocarbons From Deposits Of Oil, Natural Gas, Oil Shale, And Tar Sands In The United StatesBy J. Wade Watkins
One potential peaceful application of nuclear explosives is stimulating the production of liquid or gaseous hydrocarbons from essentially nonproductive deposits of petroleum, natural gas, oil shale, a
Jan 1, 1964
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IC 9230 A Method For The Calibration Of Class 2 And Class 4 Standards Of MassBy Nabil A. Bibawy
The U.S. Bureau of Mines has established a method for the calibration of class 2 and class 4 standards of mass using a procedure from designs developed by the National Institute of Standards and Techn
Jan 1, 1989
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RI 3034 The Effectiveness Of Different Size Rock Dusts In Preventing Coal-Dust Explosions In Mines ? ForewordBy G. S. Rice
The recommendations of the Bureau of Mines on rock-dusting practices are embodied, except in a few details, in the Recommended American Practice for Rock-Dusting Coal Mines to Prevent Coal-Dust Explos
Jan 1, 1930
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RI 9444 - Longwall Retreat of Gate Road Pillars (c7601020-d513-40cf-aea6-4d0a1eaae1e8)This report describes a U.S. Bureau of Mines investigation into the removal of gate road chain pillars in conjunction with longwall retreat mining. The research objective was to determine, through eva
Jan 1, 2010
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IC 8219 Potential Of Nuclear Explosives For Producing Hydrocarbons From Deposits Of Oil, Natural Gas, Oil Shale, And Tar Sands In The United States (ac960082-1797-411e-80b5-b0cb478a1959)By J. Wade Watkins
One potential peaceful application of nuclear explosives is stimulating the production of liquid or gaseous hydrocarbons from essentially nonproductive deposits of petroleum, natural gas, oil shale, a
Jan 1, 1964
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RI 6738 Reduction-Volatilization Processes For Recovery Of Manganese From OresBy W. L. Falke
Procedures in which manganese compounds are reduced and the metal is volatilized and selectively condensed, a hitherto neglected area, were investigated. More than 95 percent of the manganese was reco
Jan 1, 1966