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IC 8113 Survey Of Practices In Controlling Roof At Intersections And Junctions In Underground Coal Mines ? Introduction
By R. Ward Stahl
The underground junction or intersection is analogous to the doorway or window in a building in that the continuous wall or support for the overhead structure has been weakened by making the opening.
Jan 1, 1962
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Bulletin 129 The Fusibility of Coal Ash and The Determination of the Softening Temperature
By ALBERT E. HALL, Arno C. Fieldner, Alexander L. Field
As a safeguard against excessive clinker troubles, specifications for the purchase of coal can be drawn to include the "softening" or "fusing" temperature of the ash. The value of such information has
Jan 1, 1918
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OFR-95-82 Development And Prototype Production Of A Trapped Miner Signalling Transmitter/Transceiver
By Charles H. Simmons
Two versions of a VF transceiver to aid in location of trapped miners has been developed and tested. The belt worn model was produced in both transmitter and transceiver configurations. In addition, a
Jan 1, 1981
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OFR-45-87 A Study Of RF Hazards At Low And Medium Frequencies To Blasting In Underground Coal Mines
By R. H. Thompson
Preliminary safe distances for blasting wiring from typical electromagnetic sources are presented. The distances are for underground coal mines and electromagnetic sources in the frequency range below
Jan 1, 1985
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OFR-209-83 Reverse Performance Characteristics Of Main Mine Fans (2730c789-b762-4f09-a20d-2003448b9a66)
By M. F. Dunn
During a mine fire or other emergency, it may be desirable to reverse the airflow in order to provide an escapeway or to isolate a fire. Also, in colder areas, the airflow may be reversed to prevent i
Jan 1, 1983
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OFR-41-83 Laboratory Evaluation Of Janelid Method Of Dead Heading Ventilation
By A. Erickson
The effectiveness of a loader-mounted fan on diesel vehicles combined with natural convection for ventilation of a dead heading (the patented Janelid system) was investigated experimentally. The resul
Jan 1, 1981
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OFR-15-73 Quick Opening Permissible Electrical Enclosures
By Jack Kadlecik
This final technical report describes the concept feasibility study, testing, design and development effort which went into. The quick opening enclosure access cover and flame path tolerance checking
Jan 1, 1972
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RI 3443 Explosion And Fire Hazards Of Combustible Anesthetics - Introduction (42306d06-5952-4a18-9ba7-3e20f7cde6aa)
By G. W. Jones
As a part of its general safety program the Bureau of Mines has investigated various means useful for the elimination or mitigation of the explosion hazards in connection with combustible gases incide
Jan 1, 1939
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RI 3443 Explosion And Fire Hazards Of Combustible Anesthetics ? Introduction
By G. W. Jones
As a part of its general safety program the Bureau of Mines has investigated various means useful for the elimination or mitigation of the explosion hazards in connection with combustible gases incide
Jan 1, 1939
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RI 9429 - Bending Fatigue Test 2 and 3 on 2-Inch 6X25 Fiber Core Wire Rope
By A. J. Miscoe, W. M. McKewan, J. R. Bartels
The U.S. Bureau of Mines has established a wire rope research laboratory to examine the factors that affect the life of wire rope. Two 2 in-diameter 6x25 fiber core (FC) ropes were degraded on a bendi
Jan 1, 1992
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RI 9207 - Fire Endurance of Mine Stoppings
By D. Ng
A facility to evaluate the fire endurance of mine stoppings was constructed by the Bureau of Mines in the multiple entry section of the Bruceton (PA) Experimental Mine. Stoppings up to 6 by 18 ft can
Jan 1, 1988
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OFR-35-85 Productivity Of Parent Materials On Mined Prime Farmlands Using Alternative Sources Of Organic Materials Compared To Topsoil Replacement
By J. H. Jones
The original term of grant No. 1115174 was September 1980 through December 1983. An extended progress report, covering this time period, was forwarded to the Bureau of Hines in January 1984. The p
Jan 1, 1985
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OFR-87(2)-79 High And Medium Voltage Trailing Cable Splices And Connections - Vol. II - Trailing Cable Couplers
By M. L. Fenger
This report describes a study of the factors which affect medium voltage (661 - 1000 volts) and high voltage (1001 - 7500 volts) trailing cable couplers for use in underground coal mines to connect tr
Jan 1, 1978
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OFR-47(11)-83 Ecological Studies On The Revegetation Process Of Surface Coal Mined Areas In North Dakota - 11. Effect Of Amendments On Soil-Plant-Nutrient Relations Under Controlled Conditions
By N. Malakondaiah
Several growth chamber and laboratory experiments were conducted to study the germination behavior of plant species on mine spoils and plant growth responses to nutrients on spoils and topsoils. Expe
Jan 1, 1982
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OFR-10-80 Evaluation Of Mine Parameters For Copper-Nickel Deposits For Northern Minnesota
By C. M. St. John
A series of analyses of possible mining excavations associated with the development of copper nickel deposits of the MINNAMAX site in Northeastern Minnesota is presented. Specific areas such as roof a
Jan 1, 1979
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OFR-46-87 Returning Coal Waste Underground
By John M. Popovich
Disposing of coal mine waste at the surface has been and continues to be a problem which has yet to be resolved within the coal mining industry. A possible solution to this problem is to return the re
Jan 1, 1986
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Employment And Injuries In The Fuel Industries ? Introduction (7e6b1b02-9e86-43c7-a066-72dba3fafdd4)
By Forrest T. Moyer
INJURY experience and related employment information are presented in the chapter for the coal-mining, coking, oil and gas, peat, and native asphalt industries in the United States for 1964. No attemp
Jan 1, 1965
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MLA 24-87 - Mineral Resources Of The Zwagg Island Wilderness Study Area, Curry County, Oregon ? Summary
By Edward L. McHugh
In 1986, at the request of the U.S. Bureau of Land Management, the U.S. Bureau of Mines studied the 5-acre Zwagg Island Wilderness Study Area (OR-12-14) in order to evaluate its identified mineral res
Jan 1, 1987
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OFR-96-79 Normalizing MESA-HSAC (A Mining Enforcement And Safety Administration-Health And Safety Analysis Center) Injury Data For Coal Mine Mobile Equipment Operators
By Louis Schaffer
This report characterizes several coal Dine mobile equipment operator populations with respect to age, mine experience, machine operator experience, and training. The information is used to demonstrat
Jan 1, 1977
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RI 8670 Firing an Iron Ore Pelletizing Kiln With Low-Btu Gas From Lignite
By John C. Nigro
This Bureau of Mines report summarizes the performance characteristics of a 30-day around-the-clock gasification-pelletizing test conducted in October and November of 1980 with North Dakota Indianhead
Jan 1, 1982