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  • NIOSH
    RI 9161 - Effect of Load Rate on Wood Crib Behavior

    By Thomas M. Barczak

    The effect of load rate on the load-carrying capabilities of wood cribs is investigated in this Bureau of Mines study. The modulus of deformation (stiffness) of wood crib blocks has been shown to incr

    Jan 1, 1988

  • NIOSH
    RI 4319 Petroleum-Engineering Study Of The Lake Creek Field Montgomery County, Tex.

    By H. B. Hill

    The Lake Creek gas-condensate field, Montgomery County, Tex., Was discovered early in 1941 by the Superior Oil Co. The field, shown in figure 1, is approximately 37 miles northwest of Houston, Tex., a

    Jan 1, 1948

  • NIOSH
    IC 9408 Computer-Assisted Ground Control Management System

    By David P. Conover

    The U.S. Bureau of Mines (USBM) has developed a computer-assisted Ground Control Management System (GCMS) for near realtime evaluation of underground coal mine ground conditions. The GCMS combines exi

    Jan 1, 1994

  • NIOSH
    RI 8057 Thermomechanical Method for Secondary Breakage of Hard Rocks

    By K. Thirumalai

    The feasibility of breaking hard rock by thermal weakening and subsequent mechanical impacting was tested, Field tests at a basalt quarry in Dresser, Wis., demonstrated that large hard-rock blocks (5

    Jan 1, 1975

  • NIOSH
    Driver Visibility System For Large Mining Trucks - Objective

    Reduce the number of accidents in which large mining trucks crush objects that were not visible to the driver. Approach Improved rear view mirrors, light-bending plastic lenses, and a closed cir

    Jan 1, 1979

  • NIOSH
    RI 7635 Identification And Analyses Of Copper-Base Alloys By Fluorescent X-Ray Spectrography

    By William J. Campbell

    Three types of X-ray analytical instrumentation were compared for applications in the secondary brass and bronze industry. The instruments were a conventional X-ray spectrograph, a portable X-ray spec

    Jan 1, 1972

  • NIOSH
    RI 6050 Oxygen Analysis Of Mixed Fluoride Salts ? Summary

    By J. L. Potter

    An inert-gas fusion technique was applied by the Bureau of Mines to the oxygen analysis of mixed-fluoride electrolytes used in electrowinning uranium and the rare-earth metals. Method development

    Jan 1, 1962

  • NIOSH
    IC 6232 Mining Methods And Costs At The Hecla And Star Mines, Burke, Idaho ? Introduction

    By Charles H. Foreman

    This paper describing the mining practice of the Hecla and Star mines, both located at Burke, Idaho, is one of a series being prepared by the Bureau of Mines on mining practices, methods, and costs in

    Jan 1, 1930

  • NIOSH
    RI 3524 Cooperative Fuel Research Motor-Gasoline Survey, Winter 1939-40 ? Introduction

    By E. C. Lane

    [This Is the ninth in a series of reports on properties of commercial motor fuels, made in accordance with a cooperative agreement between the Cooperative Fuel Research (C.F.R.) Committee and the Bure

    Jan 1, 1940

  • NIOSH
    RI 3641 Effects Of Carbonaceous Blasting Accessories On Gaseous Products From Explosives

    By E. J. Murphy, John C. Holtz

    "INTRODUCTION Toxic gases in the products from the detonation of explosives are one of the hazards in blasting underground. Investigations by the Bureau of Mines 4/5/ have shown that the oxygen balanc

    May 1, 1942

  • NIOSH
    RI 5229 Estimate Of Known Recoverable Reserves And Preparation And Carbonizing Properties Of Coking Coal In Claiborne County, Tenn. ? Conclusions ? Reserves

    By Robert E. Hershey

    1. This investigation shows that the most important beds in Claiborne County, from the standpoint of present production and reserves, are the Coal Creek and Jellico. Together, they contain 69 percent

    Jan 1, 1956

  • NIOSH
    Measuring diesel particulate matter in underground mines using submicron elemental carbon as a surrogate (33b509e5-8040-43bc-84c7-70764ccb89c4)

    By J. D. Noll

    Elemental carbon (EC) is used as a surrogate for regulating the exposure to diesel particulate matter (DPM) of underground metal/non-metal miners. EC was chosen as a surrogate because EC is selective

    Jan 1, 2002

  • NIOSH
    RI 9118 - Analysis of the Oxidation of Chalcopyrite, Chalcocite, Galena, Pyrrhotite, Marcasite, and Arsenopyrite

    By G. W. Reimers

    Conditions in the underground mine environment can cause self-heating of sulfide ores as a result of exothermic oxidation reactions, which may result in mine fires. This Bureau of Mines report describ

    Jan 1, 1987

  • NIOSH
    IC 8071 Quadratic Functions For Copper Radiation, 0° To 180° 2? ? Summary

    By Gerald V. Gibbs

    Quadratic functions, Q(hkl), are given to six places in increments of 0.01° for 2? from 0° to 90° for CuKa and from 25° to 180° for CuKa1. The wavelengths used for Cu in the computation are those agre

    Jan 1, 1961

  • NIOSH
    RI 2956 Review of Fatalities in Calif. Petroleum Industry, 1928

    By G. B. Shea

    "In 1928, there were 47 fatal accidents in the California petroleum industry, 14.6 per cent more than occurred in 1927 when 41 men lost their lives in the drilling, producing, manufacturing, and marke

    Sep 1, 1929

  • NIOSH
    IC 8584 Mechanical Properties And Cutting Characteristics Of Coal

    By Parviz F. Rad

    This Bureau of Mines report reviews laboratory and in-mine techniques for determining mechanical properties of coals, with special emphasis on the relationship between these properties and the minabil

    Jan 1, 1973

  • NIOSH
    RI 3032 A Study of the Properties of Texas Polyhalite Pertaining to the Extraction of Potash - II The Rate of Decomposition of Polyhalite by Water and by Saturated Sodium Chloride Solutions

    By H. H. Storch

    "INTRODUCTION The first paper of this series contained data concerning the behavior of polyhalite (K2S04.MgS04.2CaS04.2H20) upon calcination and subsequent leaching with water at 100° C. It was found

    Oct 1, 1930

  • NIOSH
    IC 7040 Coal-Mine Explosives: Their Characteristics, Selection And Safe Use ? Introduction

    By J. E. Tiffany

    A stick of explosive is a package of stored energy that can be released when needed to blast rocks, coal, and other materials; but, unlike fuels such as coal and gasoline, its potential energy is self

    Jan 1, 1938

  • NIOSH
    RI 9025 - Recovery of Vanadium, Uranium, and Phosphate From Idaho Phosphorite Ores

    By J. C. Judd

    The Bureau of Mines investigated the recovery of vanadium, uranium, and phosphorus from low-grade phosphorite ores and concentrate by leach-ing with H2S04. Samples containing 0.12 to 0.23 pct V20S, 0

    Jan 1, 1986

  • NIOSH
    Evaluation Of Mine Seals Using Ground Penetrating Radar

    By Michael J. Sapko, William D. Monaghan, Michael A. Trevits

    Mine seals are used extensively in underground coal mines to segregate mined-out areas and to isolate fire zones or underground areas that are susceptible to spontaneous combustion. Over the years, 3