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OFR-104-77 Coal Mine Combustion Products Identification And Analysis - 1. Abstract And Summary
By K. L. Paciorek
The aim of this program was to develop a reliable and meaning-ful basis for assessing certain safety aspects, namely fire and, in particular, toxicity hazards of articles employed in underground coal
Jan 1, 1976
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RI 4064 Metallurgical Research Program of Bureau of Mines Relating to the Nonferrous Metals
By S. S. Dean, B. Silkes
"INTRODUCTION The metallurgical-research program of the Bureau of Mines .for the past 15 years has emphasized the production of high-purity nonferreus metals through the utilization of our available r
May 1, 1947
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IC 7286 Influence Of Humidity Upon The Resistivity Of Solid Dielectrics And Upon The Dissipation Of Static Electricity ? Summary
By E. M. Cohn
The literature dealing with the electrical conductivity of solid dielectrics, including all its aspects and its relationships to other physical properties of these materials, is extensive and scattere
Jan 1, 1944
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OFR-35-88 Prediction Of Incipient Electrical-Component Failures
By Jeffery L. Kohler
This final report on Bureau of Mines Contract J0338028 presents the results of a research effort to predict incipient failure in electric-power-system components. The development of continuous monitor
Jan 1, 1987
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RI 4413 Estimated Cost Of Producing Heavy Fuel Oil By Hydrogenation Of Coal
By L. L. Hirst
Liquid fuel oils possess certain advantages over solid fuels. Ease in handling, precision temperature control, and almost complete freedom from ash are among those considered when a liquid fuel is sel
Jan 1, 1948
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Rock Mass Characterization For Excavations In Mining And Civil Engineering
By Nick Barton
When the Q-system was launched in 1974, the name referred to rock mass classification, with focus on tunnel and cavern support selection. Besides empirical design of support, the Q-value, or its norma
Jan 5, 2007
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IC 9451 - Self-Contained Self-Rescuer Field Evaluation: Sixth-Phase Results
By Nicholas Kyriazi, John P. Shubilla
The National Institute for Occupational Safety and Health (NIOSH), Pittsburgh Research Laboratory, has undertaken a study to determine how well self-contained self-rescuers (SCSRs), deployed in accord
Jan 1, 2000
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IC 8206 Marketing Ores And Concentrates Of Gold, Silver, Copper, Lead, And Zinc In The United States
By Melford H. Salsbury
The maximum net return from the sale of ores and concentrates of gold, silver, copper, lead, and zinc accrues to the producer when these mine products are marketed to the best advantage. Data are pres
Jan 1, 1964
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Bulletin 11 The Purchase Of Coal By The Government Under Specifications
By GEORGE S. POPE
This bulletin is the third of a series a showing the results of ment purchases of coal according to specifications as to its quality and giving typical forms of proposals for supplying coal and genera
Jan 1, 1910
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IC 6145 Mining Methods At Minas De Matahambre, Matahambre, Pinar Del Rio, Cuba. ? Introduction
By George L. Richert
The Minas de Matahambre is situated on the north coast of Cuba, in the Province of Pinar del Rio, approximately 150 miles west of Havana. This nine is the only producer of copper in Cuba, and has been
Jan 1, 1929
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RI 3920 The Metallurgical Research Program of the Bureau of Mines Relating to Iron and Steel
By R. S. Dean
"INTRODUCTION The metallurgical research program of the Bureau of Mines has been somewhat disorganized, but generally advanced by the increased activities of the war period. The present report is for
Jul 1, 1946
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OFR-5-87 Mine Hoist Electrical Systems Study - Volume II - Data/Analysis System Design Study
Safe operation and system integrity are two important properties of a mine hoist electrical system. Previous methods used to assess these systems, though rare, have involved extensive downtime and req
Jan 1, 1985
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OFR-60-86 Analysis Of Miners' Job Attendance Behavior And Its Relationship To Miners' Accidents And Injuries - Final Report
By Paul S. Goodman
This report examines absenteeism and accidents. The first section provides some background information on absenteeism. The second section examines trends in absenteeism in underground coal mines over
Jan 1, 1985
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IC 8382 Refractory Use Patterns In The Iron And Steel Industry Of The United States
By William S. Miska
The study is an economic evaluation of historical, current, and projected refractory uses in the iron and steel industry of the United States. The first part of the report presents a refractories clas
Jan 1, 1968
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Roof Screening for Underground Coal Mines: Recent Developments
By Sean Gallagher, Gene Wilson, Christopher Mark, Craig S. Compton, Gregory M. Molinda
Falls of small pieces of rock from between roof bolts continue to cause fatalities and to injure hundreds of coal miners each year. Roof screen is the most effective way to prevent these incidents, bu
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Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
By Dennis R. Dolinar
In general, the direction of the maximum horizontal stress in the eastern United States is fairly well defined. However, the variation of the magnitudes of the horizontal stresses is not very well un
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IC 6578 Good rock-dusting and ventilation in two Alabama Coal Mines
By F. E. Cash
"Explosions in bituminous coal mines are preventable. The combination of adequate ventilation, thorough rock-dusting, and water on the cutter bars of mining machines and of empty and loaded cars will
Mar 1, 1932
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IC 7095 Aerial Tramways In The Metal-Mining Industry - Part 2. Construction And Operating Costs ? Introduction
By O. H. Metzger
This is the second of two papers dealing with the construction and use of aerial tramways in the metal-mining industry. The first paper3/described aerial tramways in a general way and discussed the en
Jan 1, 1940
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RI 2480 Fluorspar Mining in the Western States
By Raymond B. Ladoo
In order to obtain comprehensive and authentic information on fluorspar mining in the western States , the writer, together with and at the request of representatives of some of the largest fluorspar
May 1, 1923
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RI 7962 In Situ Determination of Rock Behavior by Overcore Stress Relief Method, Physical Property Measurements, and Initial Deformation Method
By Eugene H. Skinner
This Bureau of Mines report describes the fieldwork and subsequent analysis to determine physical properties, stress distribution, and several aspects of rock behavior as a necessary evaluation for a
Jan 1, 1974