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OFR-40-75 Time And Amplitude Statistics For Electromagnetic Noise In Mines
By Motohisa Kanda
The time and amplitude statistics necessary to adequately describe electromagnetic (FM) noise in mines are illustrated through computer software techniques. They are 1) Allan Variance Analyses (AVA),
Jan 1, 1974
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IC 6878 Notes On Testing The Explosibility Of Coal Dusts And A Proposal To Have An International Test Method
By George S. Rice
The following paper was presented at an International Conference on Mine Safety Research held at Dortmund, Germany, September 23-28, 1935, inclusive. This conference was attended by representatives of
Jan 1, 1936
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RI 3345 Permissible Electrically Operated Rock-Dust Distributors ? Introduction (6b9ba481-2913-4300-a3ee-fd52b983a832)
The general nature of the special constructional features that are required to provide safety from explosion hazards on machines approved as permissible by the Bureau of Mines is fairly well known to
Jan 1, 1937
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RI 3820 National Motor-Gasoline Survey Winter 1944-45
By O. C. Blade
"INTRODUCTION This report on the properties of motor fuels sold through service stations in the United States is a continuation of a series of reports made in accordance with a cooperative agreement b
Jun 1, 1945
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RI 9257 Utilization of Papermill Sludges as Binders for Iron Ore Concentrate
By Larry A. Lass
The U.S. Bureau of Mines, in cooperation with the Iron Range Resources and Rehabilitation Board, investigated the potential of using northeastern Minnesota papermill waste sludges as a binder for Mesa
Jan 1, 1989
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IC 8088 Coal-Mine Hazards Caused By Electrolysis ? Introduction
By Clyde L. Brown
The ignition source of fires and explosions in coal mines is sometimes difficult to explain because resulting widespread destruction often erases valuable evidence that might reveal the cause. However
Jan 1, 1962
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RI 9248 - Assessment of Experimental Longwall Recovery Rooms for Increasing Productivity and Expediting Equipment Removal Operations
By Eric R. Bauer
The U.S. Bureau of Mines, in cooperation with a southwestern Pennsylvania coal mining company, BethEnergy Inc., Mine No. 60, Eighty-Four, PA, recently assessed the feasibility of using pre driven reco
Jan 1, 1989
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RI 8875 - Estimating Horizontal Drain Design by the Finite-Element and Finite-Difference Methods
By D. R. Tesarik
To ensure the stability ofa tailings pond embankment, the height of the phreatic surface must be kept at or below a safe level. In this investigation, the Bureau of Mines analyzed various horizontal d
Jan 1, 1984
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Introduction (b812f6a7-161c-4f41-87f7-eb34a74efe72)
The wealth of a nation can be measured many ways, but one of the most important measures is its natural resources, particularly minerals. Minerals provide the foundation upon which economic prosperity
Jan 1, 1990
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OFR-29(2)-85 Physiological Responses Of Miners To Emergency - Volume II - Appendices
By E. Kamon
This report summarizes completed research pertaining to the reaction of human subjects exposed to Self-Contained Breathing Apparatus (SCBA) stressors during escape conditions (viz., resistance breathi
Jan 1, 1984
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OFR-48-75 The Demand For And Supply Of Manpower For The Lead And Zinc Industry In Years 1985 And 2000 ? Summary
By Carl R. Christiansen
The primary objectives of this project are (1) the determination of manpower demand in primary lead and zinc production for the years 1985 and 2000, and (2) the estimation of the availability of the r
Jan 1, 1975
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RI 3591 Determination Of Types Of Sulfur Compounds In Petroleum Distillates ? Introduction
By John S. Ball
[A system of analysis for sulfur groups in petroleum distillates has been developed as one phase of the Bureau-of Mines investigation of the more economic utilization of the so-called "black oils" of
Jan 1, 1941
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RI 3591 Determination Of Types Of Sulfur Compounds In Petroleum Distillates ? Introduction (f17cca9e-1e45-4d75-a351-ad476071484f)
By John S. Ball
[A system of analysis for sulfur groups in petroleum distillates has been developed as one phase of the Bureau-of Nines investigation of the more economic utilization of the so-called "black oils" of
Jan 1, 1941
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OFR-49-75 Seismic Mine Monitor System - Phase IV Report
By J. C. Fowler
The field testing of the Seismic Mine Monitor System is described. This system consists of nine geophones buried about 40 feet deep over a ten-square-mile area, the amplifiers and electronics needed t
Jan 1, 1974
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OFR-28(1)-76 Survey Of Underground Hydraulic Coal Mining Technology - Volume 1 - Phase II Report ? Summary
By William C. Cooley
This report includes a review of all relevant data on underground hydraulic coal mining technology collected during Phases I and II of the contract. Data collection and analysis procedures are discuss
Jan 1, 1975
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Preparation Characteristics Of Some Coals Available For The Synthetic Liquid Fuels Industry ? Introduction
By Thomas Fraser
WHEN the Bureau of Mines initiated the program of large-scale research and development in the field of synthetic liquid fuels authorized in the Synthetic Liquid Fuels Act of April 5, 1044, the Coal Pr
Jan 1, 1950
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RI 7496 Oxidation Of Cobalt-Nickel-Aluminum Alloys At 1,351° To 1,429° K
By Robert M. Doerr
The research objective was to determine the effect of aluminum alloy additions on the oxidation behavior of cobalt-nickel alloys. Thirty high-purity alloys were reacted with 02 at 0.5 atm at 1,351°, 1
Jan 1, 1971
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RI 3047 Method for Measuring Voids in Porous Materials
By G. L. Oldright, J. D. Sullivan, W. E. Keck
"An apparatus and procedure developed in the laboratory of the South-west Experiment Station of the Bureau of Mines are capable not only of determining the rate and volume of penetration of solutions
Oct 1, 1930
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OFR-13-90 The Use Of Booster Fans In Underground Coal Mines
By Felipe Calizaya
This study describes the principles involved in the design of a booster fan installation, the basic requirements, and the provisions needed to guarantee a safe operation of the unit. It also describes
Jan 1, 1990
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RI 4875 Experiments On Multiple Short-Delay Blasting Of Coal - In Two Parts - Part 2
By John Nagy
To facilitate increase in the rate of coal production the Bureau of Mines conducted a study several years ago, on the basis of which the allowable charge limit for permissible explosives in single-hol
Jan 1, 1952