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RI 4451 Investigation Of Pickering Creek Lead-Zinc Deposits Chester County, Pa.By Donald F. Reed
In its program of investigation of deposits of strategic minerals, the Bureau of Mines did some development drilling from October 1247 to March 1948 at the Pickering Creek deposits, Charter County, Pa
Jan 1, 1949
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RI 2164 Oil Pipe LinesBy C. P. Bowie
"It is well known by all who are familiar with the oil industry in America that the oil pipe line is as fundamentally a part of this industry as the railroad is of most other American industries. The
Sep 1, 1920
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RI 6446 Thermodynamic Data for Columbium (Niobium) CarbideBy K. K. Kelley, L. B. Pankratz, W. W. Weller
The heat capacity of columbium (niobium) carbide (CbC ) was measured over the temperature range from 51 ° to 298 ° K, and the entropy at 298.15° K was evaluated . Also , the heat content above 298.15
Jan 1, 1964
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RI 7423 Effect Of Fuel Composition On Exhaust Emissions From A Spark-Ignition EngineBy R D. Fleming
A single-cylinder research engine was operated on pure hydrocarbons and simple (two-component) mixtures of pure hydrocarbons to study the effect of fuel composition on exhaust emissions from a spark-i
Jan 1, 1970
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Water Spray Vent Tube Cooler For Hot Stopes - A Preliminary ReportBy Edward D. Thimons
As U.S. mines go to greater depths, the high temperatures and humidities characteristic of such depths make it difficult to maintain a comfortable environment in working areas. Better techniques for c
Jan 1, 1979
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RI 3011 A Study Of The Marshall-Bird Test For Determining The Agglutinating Value Of CoalBy K. A. Johnson
Marshall and Bird have published the results of a cooperative investigation by the Bureau of Mines in which they developed a procedure for measuring the agglutinating value of coal.4 As stated in thei
Jan 1, 1930
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RI 3797 Microseismic Method of Predicting Rock Failure in Underground Mining - Part 1. - General MethodBy Wilber Duvall, Leonard Obert
"INTRODUCTION This report is the first of four to be presented on the microseismic method 4/ of predicting rock failure in underground mining. The application of the microseismic method to one specifi
Feb 1, 1945
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RI 8887 - Electrolytic Stripping of Tin in an Acid Fluoborate ElectrolyteBy J. G. Groetsch
Municipal solid waste (MSW) contains about 8 pct ferrous metallics which are typically recovered by magnetic separators at municipal resource recovery facilities. At present, only about 182,500 ton/yr
Jan 1, 1984
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Joystick Tram Control For Tracked Vehicles ? ObjectiveTo improve safety by making speed and direction control of a tracked vehicle simpler and instinctive. Approach A joystick control (which determines vehicle speed and direction of movement as w
Jan 1, 1978
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RI 3270 Survey of Fuel Consumption & Refineries, 1933By G. R. Hopkins
"Summary An apparent decline in fuel efficiency at refineries, which first became came evident in 1930 and continued through 1933, was checked in 1933 when the average amount of heat needed to refine
Feb 1, 1935
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RI 6339 compressive strength versusBy Robert T. Beckman
The results of a preliminary investigation of compressive strength versus length-diameter (L/D) ratios of potash specimens and the statistical treatment of the data are summarized in this report. The
Dec 1, 1963
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OFR-41-87 Formation Of Titanium Powder By Potassium Reduction Of Titanium SaltsBy Donna D. Harbuck
The Bureau of Mines has investigated a process to produce titanium powder directly from titanium salts. If successful, such a process could lower the cost and increase the use of titanium. In this stu
Jan 1, 2011
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OFR-113-76 Characteristics Of An Acoustic Coupler For Use In An Audio Dosimeter CalibratorBy David N. Montgomery
The characteristics of a closed cavity acoustic coupler were measured. Various configurations were investigated to determine their feasibility for use in a portable audio dosimeter calibrator.
Jan 1, 1976
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Technology News - No. 539 - Identifying the Benefits of Engineering Noise Controls Through a Business CaseTo develop a business case that promotes adoption of noise controls by reducing barriers to industry acceptance and enhancing drivers that foster their implementation. Background Over 75% of
Dec 1, 2009
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RI 2991 Cracking Natural Gas In Water-Gas Generators With Recovery Of Carbon BlackBy Wm. W. Odell
This report comprises a brief outline of the experimental cracking of natural gas in a water-gas generator at Louisville, Kentucky, and a discussion of the results obtained. The work was done under a
Jan 1, 1930
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IC 6462 Methods And Costs Of Mining Quicksilver Ore At The New Idria Mine, San Benito County, Calif. - IntroductionBy W. R. Moorehead
This paper, describing the mining methods and colt at the New Indria quicksilver mine, is one of a series of similar papers being prepared by the Bureau of Mines on various mines in the United States.
Jan 1, 1931
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RI 8548 An Apparatus and Procedure for Calibrating a Water Vapor Analyzer in the 0.1-to 15-ppm RangeBy Harold L. Rhodes
The Bureau of Mines has developed a quantitative method to determine water vapor in helium in the range of 0.1 to 15 ppm by volume. This method uses the quantitative chemical reaction of H20 with CaH2
Jan 1, 1981
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IC 7962 Recommended Standards For Alternating Current In Coal MinesAlthough alternating-current (a.-c.) power systems and equipment have been used in coal mining for many years, most mines in the United States are powered mainly by direct current (d.-c.). There are s
Jan 1, 1960
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RI 5796 Titanium-Gadolinium Phase Diagram ? SummaryBy J. G. Croeni
The high thermal-neutron cross section of gadolinium and the good mechanical and corrosion properties of titanium suggest that alloys of these two metals might be useful as control rod material. To ai
Jan 1, 1961
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Improved Dust Control For Bag Handlers - On-Site Tests Lead To Minor Modifications To A Bag-Palletizing System That Significantly Reduce Workers' Dust ExposureBy Jeanne A. Zimmer, Brad Smith, Steve Viles, Andrew B. Cecala
A recent report evaluating silica exposure levels in the metal/nonmetal mining industry noted that bag packaging and loading are some of the occupations at the greatest risk. In addition to dust probl