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RI 5009 Distillation Assays Of Missouri River Basin Coals ? Introduction And SummaryBy Manuel Gomez
This report presents experimental work conducted on a number of coals found within the boundaries of the Missouri River Basin, which were, to an extent, a selection of coals typical of that region. In
Jan 1, 1953
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RI 4371 Shaped Charges Applied To Mining Part 1. - Drilling Holes For BlastingBy Hiram C. Draper
The Mining Division of the Bureau of Mines, in cooperation with the Obstacle and Demolition Branch, Engineer Research and Development Laboratories, Department of the Army, undertook some extensive tes
Jan 1, 1948
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MLA 15-89 - Mineral Resources Of The Owyhee Breaks Study Area, Malheur County, Oregon ? SummaryBy Causey J. Douglas
In 1988, at the request of the Bureau of land Management, the U.S. Bureau of Mines studied part of the 13,460-acre Owyhee Breaks Wilderness Study Area (OR-003-059) in order to evaluate its identified
Jan 1, 1989
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RI 8395 Effect of Symmetric Bit Wear and Attack Angle on Airborne Respirable Dust and Energy ConsumptionBy Bruce D. Hanson
The Bureau of Mines conducted a series of experiments using four different coal types to determine the effect of attack angle and symmetric bit wear on airborne respirable dust (ARD) generated by poin
Jan 1, 1979
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RI 3234 Table Cleaning of Fine Coal from the Thompson and Woodstock Beds of the Cahaba Field, ALBy W. D. Musgrove, B. W. Gandrud, A. C. Richardson
"INTRODUCTION The Cahaba coal field is the second largest coal—producing area in Alabama. This field underlies parts of Shelby, Jefferson, St. Clair, and Bibb Counties and has an area of about 270 squ
May 1, 1934
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IC 8632 Basic Estimated Capital Investment And Operating Costs For Underground Bituminous Coal Mines - Mines With Annual Production Of 1.06 To 4.99 Million Tons From A 72-Inch CoalbedBy Sidney Katell
This study estimates capital investment, operating costs, and selling prices for four underground bituminous mines producing coal with annual production ranging from 1.06 to 4.99 million tons. It is a
Jan 1, 1974
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IC 9259 Electrical Accidents In Mining (1980-85) Fatal And Nonfatal Accidents Underground And On The Surface At Underground Coal And Metal-Nonmetal MinesBy A. Oyler
The U.S. Bureau of Mines has compiled data on the major causes of fatal and nonfatal electrical accidents related to mining, and their associated costs, for the 1980-85 period. Specific electrical pro
Jan 1, 1990
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RI 6825 Preparation Characteristics Of Coal From Webster County, W. Va.By A. W. Deurbrouck
This report describes the preparation characteristics of the significant coalbeds from which samples could be obtained in Webster County, W. Va. In 1964, approximately 825,000 tons of coal was produ
Jan 1, 1966
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IC 8824 Mineral Depletion Allowances And U.S. Import DependenceBy Phillip N. Yasnowsky
This Bureau of Mines report examines the percentage depletion allowance rate structure in relation to several criteria that are indicative of U.S. mineral import dependence. These criteria are the min
Jan 1, 1980
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RI 8239 Coal-Pyrite Flotation in Concentrated Pulp - A Pilot Plant StudyBy Kenneth J. Miller
The Federal Bureau of Mines coal-pyrite flotation process has been modi¬fied to produce a concentrated final clean coal slurry underflow that could be dewatered more effectively by filtration or centr
Jan 1, 1977
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RI 5135 Preparation Characteristics Of Coal From Letcher County, Ky. - IntroductionBy J. W. Miller
Depletion of coals most suitable for metallurgical fuel has nude necessary a general survey of coking-coal reserves in the United States. These investigations were begun in 1948 at the joint request o
Jan 1, 1955
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RI 5450 Core-Drill Sampling Of Cuyuna-Range Manganiferous Iron Formations, Crow Wing County, Minn. ? SummaryBy Leonard F. Heising
Domestic production of Metallurgical-grade manganese has contributed such a small percentage of the United States industrial demands that areas known to contain large tonnages of low-grade manganese o
Jan 1, 1959
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Factors To Consider When Purchasing A New Set Of Longwall ShieldsBy Thomas M. Barczak
Purchasing a new set of longwall shields requires a substantial investment. A poor shield design can lead to economic hardships, safety concerns for the mine workers, and closure of the mine. This p
Jan 10, 2000
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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 9158 - Potential for Recovery of Rutile and Other Byproducts From Western Copper TailingsBy E. G. Davis
The Bureau of Mines studied tailings samples from 11 large-scale western copper operations to determine the potential for recovery of rutile and other critical and strategic minerals. Up to 15 pounds
Jan 1, 1988
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IC 7103 Fatalities At Indiana Coal Mines, 1934-38By W. H. Tomlinson
During the 9 years ended December 31, 1938, 188 fatalities resulted from preventable accidents in and around the coal mines of Indiana; 173 of these occurred at underground mines and 15 at stripping o
Jan 1, 1940
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OFR-161(2)-82 Probabilistic Modeling Of Tailings Embankment Designs - Volume I - Appendix I - Cone Penetrometer RecordsBy Loren R. Anderson
This is an Appendix of Volume I. It contains the results of the electric cone penetrometer soundings from the first phase of the testing program.
Jan 1, 1982
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RI 4167 Sulfur in Low-Gravity Fractions of Some Bituminous CoalsBy Thomas Fraser, William L. Crentz
"INTRODUCTION Sulfur is a most damaging impurity in many of our American coals. From the older coal industry of Europe and Britain we can apparently learn but little about the problem of preparing and
Dec 1, 1947
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RI 6839 Influence Of Continuous Carbonization Method, Temperature, And Carrier Gas On The Amounts Of Individual Pyrolysis Products From A Sub-Bituminous CoalBy Jr. Karr
The Bureau of Mines studied the influence of carbonization method, temperature, and carrier gas on the composition of eight different low-temperature tars produced from a Colorado subbituminous coal.
Jan 1, 1966
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RI 9139 - Removal of Copper From Molten Ferrous Scrap: Results of Laboratory InvestigationsBy L. L. Oden
The Bureau of Mines has studied a number of processes to remove Cu from molten steel scrap with the objective of determining if any of the laboratory methods studied warranted in depth research invest
Jan 1, 1987