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RI 7237 Application Of Statistical Response Surface Fitting In Predicting Lignite PropertiesBy Manuel Gomez
The Bureau of Mines used data from 31 core samples to develop prediction equations for evaluating chemical and carbonization properties of six seam units in a lignite deposit approximately 2 miles wid
Jan 1, 1969
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Mineral Indicators - Aluminum (1be79343-8f77-4124-87c3-6887d4c4a923)Electric power curtailments resulting from the coal strike, required Noranda Aluminum, Inc. to shut down its 140,000 ton-per-year (tpy) primary aluminum smelter at New Madrid, Mo., and layoff 308 work
Jan 1, 1978
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IC 7357 Extraction And Uses Of Beryllium In Germany ? ForewordBy George T. Motock
The author prepared the following report as the result of a trip to Germany in the summer of 1945 for the Technical Industrial Intelligence Commitee Subcommittee on Metals and Minerals. The purpose of
Jan 1, 1946
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RI 7686 Dispersion Strengthening Of Internally Oxidized Iron-Aluminum AlloysBy Mark I. Copeland
The formation of A1203 dispersoids 0,14 and less in size in dilute iron-aluminum alloys by internal oxidation in wet hydrogen and dispersion strengthening of iron by application of the technique to ir
Jan 1, 1972
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RI 5578 Crushing Chestnut-Size Anthracite To Produce Buckwheat No.1 And Rice Sizes ? Summary And ConclusionsBy J. W. Eckerd
The crushing of chestnut-size (1-5/8 by 13/16 inch) Pennsylvania anthracite in four commercial crushers (impact) jaw) hammer-mill) and gyratory types) was studied by the Bureau of Mines to determine w
Jan 1, 1960
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IC 7176 Detailed Study Of 60-Day Nonfatal Underground Accidents In Pennsylvania Bituminous Coal Mines During 1939 ? IntroductionBy L. C. IlsLey
Through the cooperation of the Pennsylvania Department of Mines the writer obtained from State, records detailed information concerning coal-mine accidents occurring in Pennsylvania bituminous mines d
Jan 1, 1941
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RI 4892 Petroleum-Engineering Study Of K.M.A. Reservoir, Southwestern Part Of K.M.A. Oil Field, Wichita And Archer Counties, Tex.By Rollie P. Dobyns
The K.M.A. reservoir was discovered to be oil bearing at a depth of 3,719 feet on March 11, 1931. Extensive development, however, was not begun immediately, because the discovery well had a low initia
Jan 1, 1952
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RI 8179 Metallization of Pelletized, Domestic, Iron Oxide Superconcentrates With Lignite and Coal in a Rotary KilnBy Roy E. Peterson
The Bureau of Mines conducted an investigation to produce metallized pellets from domestic iron ore superconcentrates using lignite and subbituminous coal as reductants. Feed materials for the metalli
Jan 1, 1976
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Low-Temperature Carbonization Assays Of North American Coals ? SummaryBy W. A. Selvig
[THE BUREAU OF MINES receives many requests for information regarding the low-temperature carbonization properties of American coals. This report presents in collected form the results of Fischer-Schr
Jan 1, 1957
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Altered Calcium Homeostasis and Cell Injury in Silica-Exposed Alveolar MacrophagesBy D. E. Banks, J. K. H. Ma, Y. Rojanasakul, J. Y. C. Ma, C. J. Malanga
There is evidence to suggest that cell injury induced in alveolar macrophages (AM) following phagocytic activation by silica particles may be mediated through changes in intracellular free calcium [Ca
Nov 1, 1995
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IC 7806 Use Of Lignin Sulfonate For Dust Control On Haulage Roads In Arid Regions ? Summary And IntroductionBy John P. Harmon
Vehicles traveling on untreated dirt and gravel roads at open-pit mines disseminate high concentrations of dust (fig. 1). Excessive dust creates safety hazards by reducing visibility and may endanger
Jan 1, 1957
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RI 5332 Analyses Of Tipple And Delivered Samples Of Coal (Collected During The Fiscal Year 1956) ? IntroductionBy S. J. Aresco
The Bureau of Mines has been active in promoting the purchase of coal for Government use under specifications that define the requirements in terms of heating value of the coal, expressed in British t
Jan 1, 1957
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RI 7063 Vapor Pressures Of Liquid Molybdenum (2,890° To 2,990° K) And Liquid Zirconium (2,229° To 2,795° K)By R. K. Koch
The vapor pressures of liquid molybdenum and liquid zirconium were determined by the Langmuir free-evaporation method. An electron-beam furnace with a water-cooled copper crucible was used for melting
Jan 1, 1968
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RI 4531 Sampling And Determination Of Aldehydes In Diesel-Engine Exhaust Gas And In Mine AirBy Henry W. Busch
Determination of the aldehyde content of Diesel-engine exhaust gas has proved rather cumbersome and unsatisfactory when carried out in its entirety in field investigations; therefore, studies were con
Jan 1, 1949
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IC 7191 Prevention Of Premature Shots During Springing Of Deep Drill Holes In Quarries And Open-Pit Workings - IntroductionBy D. Harrington
Springing or chambering of deep drill holes is common practice in some quarries. It involves definite hazards from premature explosion during placing of the springing charges or the final charge due c
Jan 1, 1941
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RI 7569 Preparation Of Thorium-Magnesium Alloys And Pure Thorium By Magnesium Reduction Of Thorium TetrachlorideBy T. T. Campbell
Studies were conducted by the Bureau of Mines to develop a process for preparing thorium-magnesium master alloys or pure thorium metal by magnesium reduction of thorium tetrachloride in a semicontinuo
Jan 1, 1971
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RI 2674 The Ignition Of Firedamp By Exposed Filaments Of Electric Mine-Lamp Bulbs.By R. D. Leitch
Tests have recently been conducted by the Bureau of wines on the ignition hazard of exposing heated filaments of electric mine lam bulbs in an explosive mixture of methane and air. This investigation
Jan 1, 1925
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IC 9299 Wire Ropes Used For Hoisting In U.S. MinesBy W. M. McKewan
This U.S. Bureau of Mines report discusses wire ropes used for hoisting in U.S. mines. The in-formation presented was extracted from a large body of data compiled by the U.S. Mine Safety and Health Ad
Jan 1, 1991
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RI 7578 Rock-Bolt Anchorage In Tertiary-Gravel Material: Badger Hill, CaliforniaBy John P. Conway
This Bureau of Mines investigation was undertaken to determine the feasibility of lock-bolt support in Tertiary-gravel material. Pull tests were performed on five types of rock-bolt anchors to determi
Jan 1, 1971
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Bulletin 15 Investigations Of Explosives Used In Coal MinesBy Clarence Hall, S. P. Howell, W. O. SNELLING
The explosives used in coal mines not only occasion accidents such as occur in the use of explosives elsewhere, but they frequently cause widespread disasters by igniting explosive mixtures of mine ga
Jan 1, 1912