Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • NIOSH
    IC 8682A Basic Estimated Capital Investment And Operating Costs For Underground Bituminous Coal Mines - Mines With Annual Prod Of 1.06 To 4.99 Million Tons From A 72-Inch Coalbed - Revision Of Information Circular 8632

    By 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, 1976

  • NIOSH
    OFR-6-75 Short Duration Self-Rescue Breathing Apparatus

    By E. E. Buban

    A self-contained breathing apparatus has been developed to provide complete respiratory protection for a miner in an irrespirable atmosphere. The apparatus has the desired features of comfort, reliabi

    Jan 1, 1974

  • NIOSH
    IC 8224 Safety Organization And Activities Of Award -Winning Companies In The Coal-Mining Industry ? Introduction

    By Robert T. Davis

    An award is a form of recognition given for superior performance in a special field of endeavor. Each year awards are given by the Joseph A. Holmes Safety Association and the National Safety Council t

    Jan 1, 1964

  • NIOSH
    IC 8218 Research And Technologic Work On Explosives, Explosions, And Flames: Fiscal Year 1962

    The principle activities of the Explosives Research Laboratory from July 1, 1961 to June 30, 1962, are described briefly in part 1. Part 2 gives short abstracts of publications that appeared durin

    Jan 1, 1964

  • NIOSH
    IC 8307 Fluorspar Deposits Of New Mexico (beb2aecf-a76f-4af5-8254-2050a1bd8553)

    By Frank E. Williams

    This Bureau of Mines report describes 147 known fluorspar deposits in New Mexico and briefly mentions 54 miscellaneous occurrences for which little or no information was obtained. Most miscellaneous o

    Jan 1, 1966

  • NIOSH
    Concentration Of Copper Ores In North America ? Introduction

    By Thomas G. Chapman

    The four major steps in the production of marketable copper are mining, concentrating, smelting, and refining. In a few cases, however, leaching takes the place of concentrating, smelting, and refinin

    Jan 1, 1936

  • NIOSH
    RI 8508 Airblast Instrumentation and Measurement Techniques for Surface Mine Blasting

    By Virgil J. Stachura

    The Bureau of Mines has investigated techniques and instrumentation that measure accurately the airblast overpressures from surface mine blasting. The results include equivalencies between broadband r

    Jan 1, 1981

  • NIOSH
    RI 6223 Concentration Of Fine Mica

    By James S. Browning

    Recovery of fine mica from a sample of impounded tailing from the Dixie Mines, Inc., crushing and screening operations, Heflin, Ala., was investigated to determine if plant losses of mica could be red

    Jan 1, 1963

  • NIOSH
    RI 7045 Talc And Asbestos At Dadeville, Ala.

    By Thornton L. Neathery

    Geologic investigation of a mineralized zone in eastern Alabama indicates that large quantities of talc and soapstone are scattered over a wide area close to the surface. Laboratory experiments show t

    Jan 1, 1967

  • NIOSH
    RI 3502 Time Study Analyses - Progress Report 3. Quarry Drilling ? Introduction

    By J. R. Thoenen

    In the summer of 1937 the authors began a series of time studies of the various processes employed in' the production of crushed stone. These studies, made at quarries situated in the eastern and

    Jan 1, 1940

  • NIOSH
    RI 4879 Recent Practice At The Bureau Of Mines Boulder City, Nev., Titanium Plant

    By H. C. Fuller

    This paper discusses 105 production runs at Boulder City, Nev., in which titanium metal was made in 200-pound batches. It describes the equipment and techniques used in preparing raw material, the red

    Jan 1, 1952

  • NIOSH
    Advances In Coal Spectrometry - Absorption Spectrometry

    By R. A. Friedel

    THE IMPORTANCE of infrared and ultraviolet-visible spectrometry in studies of the structure of coal and similar substances is described. Special experimental techniques have been developed for these s

    Jan 1, 1967

  • NIOSH
    RI 7731 Materials Handling Research: Shear Properties Of Several Granular Materials

    By G. A. Wancheck

    Shear tests were performed on several prepared samples of granular and powdery bulk materials to investigate the following parameters: Particle size and distribution, particle movement, moisture conte

    Jan 1, 1973

  • NIOSH
    OFR-111-80 Rapid Excavation Of Rock With Small Charges Of High Explosive

    By G. B. Clark

    One portion of this project was to test a blast shield and to design some features for a novel tunneling method termed the Automated Drill and Blast System (ADBS). The ADBS tunneling concept was devel

    Jan 1, 1979

  • NIOSH
    OFR-21-86 Development Of Noise Control Technology For Jumbo Drills

    By Piyush K. Dutta

    This report describes the design, development, manufacture and incorporation of noise control features on a jumbo drill and the results of successful tests of this drill in surface and underground min

    Jan 1, 1985

  • NIOSH
    Explosion-Proof Design And Wiring For Permissible Mining Equipment - Introduction

    By E. J. Gleim

    [THE ORGANIC act under which Federal Bureau of Mines was established provided for the investigation of the safe use of electricity in mines. Each Congress appropriates funds for conducting this invest

    Jan 1, 1955

  • NIOSH
    OFR-3(2)-81 Oil Shale Mining Environmental Research Program Plan - Mid Funding Level - V. II

    By F. G. Scott

    This document is a proposed program plan for mining environmental research to be conducted by the U.S. Bureau of Mines in support of industrial oil shale mining and processing. This program plan is on

    Jan 1, 1980

  • NIOSH
    OFR-44-87 Methods For The Selective Sampling Of Diesel Particulate In Mine Dust Aerosols

    By Virgil A. Marple

    The objective of this contract was to investigate time-integrated and real-time methods for determining the diesel exhaust particulate concentration in underground mines, in particular, coal mines. Th

    Jan 1, 1986

  • NIOSH
    RI 8020 Rock Fragmentation by High-Frequency Fatigue

    By Patrick J. Cain

    The fatigue-failure characteristics under high-frequency (10 KHz) cyclic loading were determined for a marble, granite, and quartzite. The rock speci-mens were cyclicly loaded (using a high-power piez

    Jan 1, 1975

  • NIOSH
    IC 8030 Manganese Deposits Of New Mexico ? Summary And Introduction

    By Lloyd L. Farnham

    This paper is one of a series describing the mineral resources of the Nation, including location, history, production, ownership, geologic setting, and mining methods for most of the known manganese d

    Jan 1, 1961