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OFR-6-80 Study Of Underground Coal Mine Waste Disposal Requirements In The United States
By Walter W. Kaufman
This report summarizes a study conducted to establish the nature and impact of regulations governing disposal of refuse from underground coal mines. The regulations affecting refuse disposal in eight
Jan 1, 1978
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OFR-33-74 Truck Fire Protection System Validation - Final Report-Executive Summary - Introduction And Summary - Introduction
Development of automatic fire protection systems for large, mobile mine haulage equipment was initiated under Department of Interior's Bureau of Mines-FMC Corp. contract H0122053, "Improved Senso
Jan 1, 1974
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RI 9239 - Evaluation of Moderately High-Pressure Water-Jet Assist Applied to Single Drag Bit Tools
By J. L. Thompson
The U.S. Bureau of Mines conducted a water-jet-studies program using a single-bit, in-seam test unit to determine effects of a moderately high-pressure (up to 10,000 psi) water-jet-assisted cutting sy
Jan 1, 1989
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RI 7168 Investigation Of Operating Variables In The Attrition Grinding Process
By Martin H. Stanczyk
Bench scale, laboratory batch attrition grinding tests were made of a coarse commercial kaolin in a stainless steel, 5-inch-diameter attrition grinding machine to study the effect of a number of basic
Jan 1, 1968
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Site-Specific Investigation Of A Cobalt/Manganese Occurrence In The Million Hills Study Area, Clark County, Nevada ? Summary
By Phillip R. Moyle
A cobalt/manganese occurrence in Clark County, Nevada was the subject of a site-specific mineral investigation by the U.S. Bureau of Mines in 1988-90. The study site is in the northern part of the Mil
Jan 1, 1990
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OFR-45-74 Effect Of Stress On Permeability Of Coal - Objectives
By W. H. Somerton
The basic objective of this project was to determine the permeability of coal fracture systems as a function of effective stress. The detailed steps in accomplishing this objective are given in Articl
Jan 1, 1974
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Fatal And Nonfatal Injuries: MSHA Data
This chapter presents an overview of fatal and nonfatal injuries reported to MSHA during 1986-1995. Reportable injuries follow the criteria for reporting specified in 30 CFR 50. These criteria are lis
Jan 5, 2000
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RI 8462 Recovery of Rutile From a Porphyry Copper Tailings Sample
By T. O. Llewellyn
The Bureau of Mines conducted batch-?scale tests on a sample of parphyry copper mill tailings as part of a study to determine the feasibility of rutile recovery from this source. The tailings that wer
Jan 1, 1980
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OFR-41-77 Digital Computation Of Transients And Safety Testing Of Mine Electrical Power Systems
By Eldon Keith Stanek
This annual report deals with four distinct tasks related to research on the safety and reliability of mine electrical power systems. Task one is to develop tests and the associated instrumentation to
Jan 1, 1976
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OFR-135-82 Microprocessor TDR
By W. C. Blanchard
Time Domain Reflectometry (TDR) is a remote sensing technique using active backscatter. This technique is applicable to the testing for faults and multiple partial faults on cable. The battery operate
Jan 1, 1980
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Helium - General Summary
By H. S. Kennedy
THE HELIUM ACT (50 Stat. 885; 50 U. S. C. 161,163-166), as amended, places the responsibility for conserving, producing, and selling helium upon the Secretary of the Interior, acting through the Burea
Jan 1, 1958
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OFR-133A(2)-77 Longwall-Caving Mining Method For Thick Coal - Design And Feasibility Study - Final Report, Volume II
By M. G. Wallis
This report presents the results of a study to develop a detailed mining method design based on longwall mining with sublevel caving. The method is applicable to low-dipping coal seams 20 or more feet
Jan 1, 1977
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RI 8722 Laboratory Testing of a Radial-Axial Loading Splitting Tool
By Sterling J. Anderson
To define the technical competence and capabilities of a nonexplosive excavation concept, the Bureau of Mines conducted reduced-scale laboratory tests of a mechanical excavation tool called a rock spl
Jan 1, 1982
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RI 3419 Progress Reports -Metallurgical Division ? 25. Annual Report Of The Metallurgical Division, Fiscal Year 1937-38 ? Foreword
By R. S. Dean
This is the fourth of a series; of annual report of the Metallurgical Division to be released in this form and cover the fiscal year July 1, 1937, to rune 30, 1938. This report is not merely a recita
Jan 1, 1938
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RI 3419 Progress Reports - Metallurgical Division ? 25. Annual Report Of The Metallurgical Division, Fiscal Year 1937-38 ? Metallurgical Fundamentals Section
By R. S. Dean
[During the past year the Metallurgical Fundamentals Section gave about an equal amount of time to the experimental determination of fundamental thermodynamic constants and to the demonstration of the
Jan 1, 1938
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RI 5988 Underground Blasting Accident Involving An Air-Placed Ammonium Nitrate-Fuel Oil Mixture ? Introduction
By R. W. Van Dolah
A premature detonation of an explosive charge occurred on January 30, 1961, at a face being prepared for blasting in the underground Jefferson Island Salt Mine, Diamond Crystal Salt Co., Jefferson Isl
Jan 1, 1962
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RI 7865 A Standard Rock Suite for Rapid Excavation Research
By Warren W. Krech
Rock property data is needed over a wide range of parameters for the optimum execution of rapid excavation research. Eight rock types were chosen by the Bureau of Mines for a standard rock suite for s
Jan 1, 1974
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OFR-31-76 Metallic And Nonmetallic Mining In The United States - A Hazard Analysis
By Y. P. Chugh
This is the final report of a study done by IIT Research Institute for the Bureau of Mines to identify the problem areas and technological inadequacies in noncoal (metal, nonmetal, stone, and sand and
Jan 1, 1974
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RI 7537 Dry-Pressed Building Bricks From Copper Mill Tailings
By P. G. Pigott
This Bureau of Mines laboratory research demonstrated that building bricks meeting ASTM specification C62-66 for grades SW and MW of FBS-type bricks can be produced from waste copper mill tailings. Wa
Jan 1, 1971
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RI 9089 - Extended Bumper Designs for Large Haulage Trucks
By Stephen A. Swan
This Bureau of Mines report discusses research to analyze and evaluate extended bumper systems in order to determine the degree of protection provided to equipment operators in the event of rear-end c
Jan 1, 1987