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  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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

  • NIOSH
    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