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  • NIOSH
    OFR-30-84 Influence Of Rock Discontinuities On Coal Mine Subsidence

    By Kevin M. Connor, O&apos

    This report documents-the process of literature review, site selection, instrument installation, data acquisition, and preliminary data reduction performed to evaluate the influence of rock mass disco

    Jan 1, 1983

  • NIOSH
    OFR-152(2)-83 Noise Attenuating Properties Of Earmuffs Worn By Miners - Volume 2: Development Of A Laboratory Procedure For The Physical Measurement Of Earmuff Attenuation

    By Kenneth C. Stewart

    The overall purpose of this study was to develop and evaluate, in the laboratory, instrumentation and procedures which might allow for the use of physical measurements of earmuff attenuation which wou

    Jan 1, 1980

  • NIOSH
    RI 8383 Relationship of Mineralogical and Chemical Composition of Refractory Periclases to Modulus of Rupture at 1,500° to 1,600° C

    By J. T. McLendon

    As part of its research project in developing improved refractory materials for metallurgical applications, the Federal Bureau of Mines obtained hot modulus of rupture data at 1,500°,1,550°, and 1,600

    Jan 1, 1979

  • NIOSH
    OFR-5-73 A Numerical Model For The Study Of Particle Interactions In Relation To Hydraulic Transport ? I. Introduction

    By Andrew K. C. Wong

    Hydraulic transport has been considered as one of the most economical methods in transferring granular materials over relatively long distances. In the natural world, it is used to transport basic mat

    Jan 1, 1972

  • NIOSH
    RI 7047 The Cause Of Fuming In Oxygen Steelmaking

    By J. P. Morris

    The Bureau of Mines investigated the mechanics of fuming of iron-carbon melts during top-blowing with oxygen. Melts weighing 45 lb were prepared in an induction furnace and blown with oxygen by means

    Jan 1, 1967

  • NIOSH
    OFR-105-78 Personal Alpha Alarm

    By Donald B. Lindsay

    A new concept was proposed for a personal warning device for use by miners who may be exposed to health hazards from inhalation of alpha-emitting radionuclides, especially radon-222 and its short-live

    Jan 1, 1978

  • NIOSH
    OFR-76(1)-79 Development Of Highwall Mining Equipment (Phase I) Volume I

    By Mandius C. Lundal

    This report describes the work done to develop a coal mining machine to increase productivity and recovery from thin seams beyond the highwall, in addition to decreasing the miner's susceptibilit

    Jan 1, 1977

  • NIOSH
    RI 3543 Use Of Rock Dust In Bituminous-Coal Mines, 1930-38 (A Statistical Survey)

    By W. W. Adams

    Rock dust, as a preventive or limiting factor in explosions of gas and coal dust in bituminous-coal mines, was used in larger quantities in 1939 than in any other year except 1937 since annual figures

    Jan 1, 1940

  • NIOSH
    OFR-174-82 Impact Of Surface Mining On Soil Compaction In The Midwestern U.S.A.

    By Steve C. Albrecht

    The objective of this study is "to assess the impact of surface mining on soil compaction in the Midwest". The study revolves around a unique field sampling program targeted at four mine sites utilizi

    Jan 1, 1982

  • NIOSH
    IC 8856 Analyses Of Natural Gases, 1980 ? Introduction

    By B. J. Moore

    This publication contains analyses and related source data for 675 natural gas samples from wells and pipelines in 24 States and 5 foreign countries. The samples obtained and analyzed during calendar

    Jan 1, 1981

  • NIOSH
    MLA 47-83 - Mineral Investigation Of The Scodies Rare II Area (No. 5212), Kern County, California ? Summary

    By Donald O. Capstick

    The U.S. Bureau of Mines conducted an inventory of the prospects and mineral resources in the Scodies RARE II area (No. 5212) in 1982. No mineral production is recorded from the area, and no mines are

    Jan 1, 1983

  • NIOSH
    IC 8835 Guide To Substation Grounding And Bonding For Mine Power Systems

    By Wils L. Cooley

    Although electric utility companies have been active in grounding and bonding within substations, the mining engineer or mine electrical engineer is not involved to the extent that he can be fully up-

    Jan 1, 1980

  • NIOSH
    IC 8111 Water As An Inert For Neutralizing The Coal Dust Explosion Hazard ? Summary And Introduction

    By Donald W. Mitchell

    Research shows that water neutralizes the explosion hazard of coal dust when present in sufficient quantity and when intimately mixed with the dust. The quantity of water required to neutralize coal d

    Jan 1, 1962

  • NIOSH
    MLA 44-83 - Mineral Investigation Of The Cucamonga Rare II Area (Nos. B5174 And C5174), San Bernardino County, California - Summary

    By Thomas J. Peters

    Tungsten, silver, lead, zinc, and placer gold occur in the Cucamonga B RARE II area (no. B5174). A strata-bound, scheelite-bearing zone at the Blue Diamond prospect (fig. 1, no. 1) contains an estimat

    Jan 1, 1983

  • NIOSH
    Effects of Platelet Activating Factor on Various Physiological Parameters of Neutrophils, Alveolar Macrophages, and Alveolar Type II Cells (5e24da3c-a90e-4d19-95ee-e3e898aac14c)

    By Natalie A. Sapola, Knox Van Dyke, Jean Rabovsky, Vincent Castranova, William H. Pailes, Melanie McPeek, Deloris J. Judy

    "INTRODCJCTJONPlatelet activating factor (PAF) is a glycerophospholipid (1-0-alkyl-2-acctyl-sn-glycerol-3-phosphoryl choline) which has been shown to mediate a broad range of biological activities. 1·

    Jan 1, 1990

  • NIOSH
    MLA 79-87 - Mineral Resources Of The Borah Peak Study Area, Custer County, Idaho ? Summary

    By Donald O. Capstick

    A mineral survey of the approximately 144,000-acre Borah Peak study area was conducted by the U.S. Bureau of Mines in 1985 at the request of the U.S. Forest Service. The area studied included the Bora

    Jan 1, 1987

  • NIOSH
    OFR-154-81 Develop Grounding Practices For Metal/Non-Metal Mines

    By Wils L. Cooley

    This report analyzes electrical accident data in the metal/non-metal mining industry. Accidents are categorized to determine their root causes. Special attention is given to accidents associated with

    Jan 1, 1981

  • NIOSH
    OFR-34-89 Thin Wall Explosion -Proof Enclosures ? Final Report ? Executive Summary

    The works recorded in this Test Report have been performed by Rade Roncar - Electrotechnical Institute of Zagreb, SFR Yugoslavia in collaboration with Bureau of Mines. The main objective of these i

    Jan 1, 1987

  • NIOSH
    RI 3452 Studies Of Roof Movement In Coal Mines - 2. Crucible Mine Of The Crucible Fuel Co. ? Introduction

    By E. R. Maize

    This report is the second of a series on roof movement in coal mines. The first (R. I. 3355)4/ dealt with convergence of roof and floor and movement of the surface accompanying and following extractio

    Jan 1, 1939

  • NIOSH
    RI 7617 Recovery Of Aluminum, Base, And Precious Metals From Electronic Scrap

    By T. A. Sullivan

    The processing of sweated aluminum electronic scrap was investigated to develop methods for recovering the aluminum and concentrating the other metals, including copper, lead, gold, and silver, into a

    Jan 1, 1972