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  • NIOSH
    OFR-125-80 Study Of The Slate Mining Industry Of Vermont/New York

    By W. I. Watson

    The study considered all the institutional, resource reserve, technological, and economic factors relevant to the industry's present and future status, such as markets and marketing techniques, c

    Jan 1, 1980

  • NIOSH
    RI 6962 Thermodynamic Properties Of Forsterite And Serpentine

    By E. G. King

    The Bureau of Mines made experimental determinations of the heats of formation of forsterite and chrysotile at 298.15° K. The heat capacities of two polymorphs of serpentine, chrysotile and antigorite

    Jan 1, 1967

  • NIOSH
    IC 6627 Iron Oxide Pigments and Mortar Colors

    By R. M. Santmyers

    The pigments, whose colors are due primarily to iron exides and iron hydroxides, comprise a variety of yellow, brown, red, and sometimes black paint-coloring agents, both natural and artificially prep

    May 1, 1932

  • NIOSH
    RI 3267 Bumps in Coal Mines of the Cumberland Field, Kentucky and Virginia - Causes and Remedy

    By George S. Rice

    "INTRODUCTION During the past 4 or 5 years the frequent occurrence of bumps in coal mines of the Cumberland field, in Harlan County, Ky., and Wise County, Va., has caused much apprehension among miner

    Jan 1, 1935

  • NIOSH
    RI 3033 The Action Of Sulphur Dioxide On Manganese Oxides At Elevated Temperatures

    By C. W. Davis

    This paper is the second of a series of progress reports on a study, of the hydrometallurgy of manganese which is being conducted in an endeavor to make possible utilization of the large deposits of l

    Jan 1, 1930

  • NIOSH
    RI 9189 - Relationship Between Horizontal Stresses and Geologic Anomalies in Two Coal Mines in Southern Illinois

    By D. K. Ingram

    In situ horizontal stresses were measured to determine the influences of geologic anomalies on the regional horizontal stress field in two coal mines in southern Illinois. Stress measurements were obt

    Jan 1, 1988

  • NIOSH
    RI 3033 The Action Of Sulphur Dioxide On Manganese Oxides At Elevated Temperatures ? Introduction

    By C. W. Davis

    This paper is the second of a series of progress reports on a study of the hydrometallurgy of manganese which is being, conducted in an endeavor to make possible utilization-of the large deposits of l

    Jan 1, 1930

  • NIOSH
    IC 6807 Petroleum Refineries, Including Cracking Plants, In The United States January 1, 1934 ? Introductory Summary

    By G. R. Hopkins

    According to reports received by the Bureau of Mines, Department of the Interior, as of January 1, 1934, there were 591 completed refineries in the United States, an increase of 86 ever the total repo

    Jan 1, 1934

  • NIOSH
    RI 8948 - Analysis of Sampling Variance From Certain Platinum and Palladium Deposits in Alaska

    By James C. Barker

    The analytical variability encountered when sampling for platinum-group metals (PGM) was statistically evaluated during a 1983 study by the Bureau of Mines and the University of Alaska. Sampling proce

    Jan 1, 1985

  • NIOSH
    OFR-13-82 Engineering Property Changes And Environmental Effects On Coal Mines Wastes Due To Slaking

    Fresh coal refuse was sampled at 21 US mines. Five of the sites were drilled, sampled and tested more extensively. Field tests included Standard Penetration tests, and in-situ density determinations.

    Jan 1, 1981

  • NIOSH
    RI 9418 - Canopy and Base Load Distribution on a Longwall Shield (14a010d7-73b6-499e-aefd-dc1cae4d5747)

    By Thomas M. Barczak

    This US. Bureau of Mines report examines the roof and floor contact pressure provided by the interaction of a shield with the surrounding strata. Controlled forces were applied to an 800-ton two-leg s

    Jan 1, 2010

  • NIOSH
    OFR-126-80 Environmental Assessment Of Surface Shortwall Mining

    By Ernest W. Hilton

    The purpose of this investigation was to assess the environmental impact of the surface mining methods currently used in the steep-sloped areas of Central Appalachia: southern West Virginia, eastern K

    Jan 1, 1979

  • NIOSH
    Brass-Furnace Practice In The United States. - Introduction.

    By H. W. Gillett

    This bulletin is issued by the Bureau of Mines as a contribution to the increase of safety and efficiency in the preparation and utilization of the mineral resources in the United States. Notable amon

    Jan 1, 1916

  • NIOSH
    OFR-163-83 The Sixth WVU Conference On Coal Mine Electrotechnology - An Evaluation Of Problems Associated With 1000 Vac Longwall Mining Systems

    By Paul M. Hall

    In the last several years, the coal mining industry has made significant changes in the design of longwall mining systems to make them more productive. Some changes, such as increasing the length of t

    Jan 1, 1982

  • NIOSH
    OFR-16-77 Proceedings - The Third WVU Conference on Coal Mine Electrotechnology - August 4-6, 1976

    A compilation of papers presented at the Third WVU Conference on Coal Mine Electrotechnology in Morgantown, West Virginia, on August 4-6, 1976. Papers cover areas of electric power, electronic communi

    Jan 1, 1976

  • NIOSH
    RI 4882 Volumetric Determination of Small Quantities of Uranium - With Special Reference to Errors Associated with Use of Jones Reductor (2b4914c2-e697-47ab-9da8-dccd8a6cadf8)

    By Heber E. Peterson, Sill. Claude W.

    "INTRODUCTION In the usual volumetric determination of uranium, the solution containing uranium is reduced in a Jones reductor, yielding a mixture of trivalent and tetravalent uranium; the trivalent u

    Jun 1, 1952

  • NIOSH
    Highlights - Aluminum -

    Reynolds Metals Company announced plans to increase its rate of production of primary aluminum by 17 thousand tons per year by the end of February. Other producers were expected to increase operating

    Jan 1, 1976

  • NIOSH
    IC 7242 Synthetic Rubber - Its Production From Petroleum, Coal, And Other Materials ? Introduction

    By W. C. Holliman

    Commercial production of synthetic rubber in the United States became a reality in 1931 when E. I. duPont de Nemours, Inc., announced the manufacture of Duprene, a synthetic rubber made by polymerizin

    Jan 1, 1943

  • NIOSH
    RI 7769 Geologic Factors Causing Roof Instability And Methane Emission Problems - The Lower Kittanning Coalbed, Cambria County, Pa.

    By C. M. McCulloch

    A geologic study of Mines 32 and 33 in Cambria County, Pa., was conducted as part of a methane control research program. Areas of high methane emission and roof instability are encountered which are r

    Jan 1, 1973

  • NIOSH
    The Value Of U.S. Minerals In The Economy In 1975

    The value of U.S. mineral raw material output reached a record $63.1 billion in 1975. This high exceeded the 1974 value of $55.2 billion by 14 percent. Among the three major mineral categories -fuels,

    Jan 1, 1976