Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
RI 7640 - Methane And Dust Control By Water Infusion - Pittsburgh Coalbed (Fairview, W. Va.)
By R. P. Vinson, Abdurrahman Cetinbas, Joseph Cervik, M. G. Zabetakis
The effect of water infusion on the flow of methane and on the production of dust was investigated at an active face in the Pittsburgh coalbed. The average total flow of methane at the face decreased
Jan 1, 1972
-
RI 7091 Effects Of Adding Rare-Earth Silicides, Aluminum, And Cryolite To Molten Steel
By R. J. Leary
This investigation was conducted to determine the effects of various rare-earth metal addition practices upon the macrostructure and the pattern of sulfur distribution in steel ingots. Heats of plain
Jan 1, 1968
-
OFR-8-86 Bag Machine Dust Controls And Bag Sealing
By T. L. Muldoon
The bagging of dry pulverized products using fluidized air packers creates severe respirable dust problems in many surface mining operations. During bag filling, excess air and product blows by the ba
Jan 1, 1985
-
OFR-50-88 Mineral Investigations In The Juneau Mining District, Alaska (Eagle River Area)
By Joseph M. Kurtak
The Bureau of Mines conducted a four year (1985-1988) mineral assessment of the Juneau Mining District in southeast Alaska as part of its ongoing statewide mining district evaluation program. Followin
Jan 1, 2011
-
MLA 23-83 - Mineral Investigation Of The Olallie Rare II Area (No. 6099), Marion And Jefferson Counties, Oregon - Summary
By Terry R. Neumann
The Olallie RARE II study area has volcanic cinder deposits with a sow potential for development. No mining claims or prospects are known within the study area, and except for common construction mate
Jan 1, 1983
-
RI 7455 Characteristics Of Electrowon And Of Hydrogen-Reduced Molybdenum Powder And Sheet
By E. F. Ferrell
Electrowon molybdenum powders and a commercial hydrogen-reduced powder, all with different minor impurities, were investigated by the Bureau of Mines with respect to inherent properties, to fabricatio
Jan 1, 1970
-
OFR-53-81 Survey Of Attractive Energy Storage And Power Averaging Concepts Applicable To Mining Machines
By William N. Patterson
Drive systems for mining machines are usually sized to accommodate anticipated peak loads. Usually, the average power requirements are considerably less. Energy storage and power averaging are attract
Jan 1, 1980
-
RI 6026 Calibration Study Of A Peak-Reading Accelerograph
By Alfred V. C. Meyer
A Blastcorder4 was calibrated on the Bureau of Mines shaking table in the frequency range of 12 to 40 c.p.s. and in the amplitude range' of 0.25 to 1.0 g. The results of this calibration study sh
Jan 1, 1962
-
IC 6627 Iron Oxide Pigments and Mortar Colors
By R. M. Santmyers
The pigments, whose colors are due primarily to iron exides and iron hydroxides, comprise a variety of yellow, brown, red, and sometimes black paint-coloring agents, both natural and artificially prep
May 1, 1932
-
OFR-52-75 Handbook For Surveys Of Inhalation Contaminants In Above Ground Coal Mining And Processing Work Areas ? I. Introduction
The objective of this handbook is to provide the inspector with guidance for recognizing hazards from inhalation contaminants in above ground work areas of underground and surface coal mining and proc
Jan 1, 1975
-
MLA 96-83 - Mineral Investigation Of The Sugarloaf Rare II Area (No. 5296), Esmeralda And Mineral Counties, Nevada ? Summary
By Steven W. Schmauch
The Sugarloaf RARE II area (No. 5296) covers 11,100 acres in the northern part of the White Mountain Range, in the Inyo fictional Forrest. It is in Nevada, about 45 mi north of Bishop, California. A m
Jan 1, 1983
-
RI 5168 Methods For Analyzing Titanium Sponge And Intermediate Products ? Summary And Introduction
By P. R. Perry
This publication is a compilation of tested methods for the analyses of titanium tetrachloride, titanium sponge, and various intermediate materials and products. They are presented in concise form wit
Jan 1, 1955
-
RI 7623 Photoelectric Concentrator For The Wet Concentrating Table
By R. A. Welsh
The Bureau of Mines has developed a photoelectric concentrator apparatus which is capable of collecting incremental products from the discharge of wet concentrating tables. The instrument uses photoel
Jan 1, 1972
-
RI 9537 - Relative Self-Heating Tendencies of Coal, Carbonaceous Shales, and Coal Refuse
By Ann G. Kim
Studies on the initiation and propagation of mine fires have dealt almost exclusively with coal. It has been assumed that the self-heating potential of carbonaceous shales and coal wastes is relativel
Jan 1, 2010
-
Submicrometer elemental carbon as a selective measure of diesel particulate matter in coal mines
By James D. Noll, M. Eileen Birch
A monitoring method for diesel particulate matter was published as Method 5040 by the National Institute for Occupational Safety and Health (NIOSH). Organic and elemental carbon are determined by the
-
IC 8811 Methodology For Evaluating Integral Gaussian Profiles
By Arthur B. Campbell
This Bureau of Mines report describes a method that utilizes a computer program to evaluate integral Gaussian profiles of atomic concentration versus depth in a solid. The specific use illustrated inv
Jan 1, 1979
-
RI 2582 The Distribution Of Sulphur In Crude Petroleum
By N. A. C. Smith, D. D. Stark
"Sulphur is apparently a normal Constituent of crude petroleum, but in most crudes is present in percentages of less than one-half of one per cent. Some crudes, however, contain more, and occurrences
Mar 1, 1924
-
Determination Of In Situ Deformation Modulus For Cemented Rockfill
By D. R. Tesarik, F. M. Jones, J. B. Seymour
As part of safety and stability studies at three underground mines in the United States, researchers installed earth pressure cells and embedment strain gauges in cemented rockfill to measure stress a
-
Bureau Of Mines Mineral Investigations In The Juneau Mining District, Alaska, 1984-1988 - Volume 2.- Detailed Mine, Prospect, And Mineral Occurrence Descriptions - Section A - Haines-Klukwan-Porcupine Subarea ? Introduction
By Jan C. Still
The Haines-Klukwan-Porcupine subarea of the Juneau Mining District (JMD) is located in the northern portion of the JMD and consists of the land between the Alaska-British Columbia boundary, the Chilko
Jan 1, 2012
-
RI 5963 Experiments In Purifying Solutions From Lime-Sintered Beryl Concentrates ? Summary
By J. M. Riley
This report summarizes Bureau of Mines experiments in purifying sulfate leach liquors, which were prepared from low-tenor beryl concentrates by modifying the Degussa process. The leach liquor was prep
Jan 1, 1962