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  • NIOSH
    IC 7613 Petroleum Refineries, Including Cracking Plants, In The United States January 1, 1951 ? Summary ? Crude-Oil Capacity

    By J. G. Kirby

    The total number of petroleum refineries in the United States continued to decline during 1950, and according to the Bureau of Mines annual refinery capacity survey there were 357 refineries January 1

    Jan 1, 1951

  • NIOSH
    OFR-61-82 Design And Develop Feasible Lighting System For Conventional Slopes Under Construction

    By William F. Hahn

    This report describes an illumination system suitable for use in a slope under construction, Simulator work was performed using actual lighting hardware to verify adequate light levels to meet MSHA pr

    Jan 1, 1981

  • NIOSH
    RI 9315 - Electrolytic Production of Calcium Metal

    By J. J. Lukasko

    The U.S. Bureau of Mines developed an alternative electrochemical process for the production of calcium metal. The current industrial practice is costly, complex, and inefficient. The Bureau method in

    Jan 1, 1990

  • NIOSH
    RI 2993 Some Phases of the Relative Responsibility of Management and Workers for Accidents In Mines

    By D. Harrington

    "Up to the last 10 or 15 years, responsibility for accidents in mines was generally, though not universally, placed upon the person or persons immediately involved. Present-day thought is rapidly veer

    Apr 1, 1930

  • NIOSH
    RI 3614 Manganese Investigations - Metallurgical Division - 5. Ore-Dressing Studies Of Manganese Ores - Beneficiation Of Manganese Wad Ores From The Chinn Property, Batesville, Ark.

    By S. M. Shelton

    Ferrograde manganese ore or its equivalent is essential to the manufacture of every ton of steel produced; although it is well-known that there are largo deposits of low-grade ore in the United States

    Jan 1, 1942

  • NIOSH
    RI 7882 Tunneling Machine Research - Size Distribution of Rock Fragments Produced by Rolling Disk Cutters

    By Parviz F. Rad

    The Bureau of Mines used a linear cutting apparatus equipped with a 7-inch disk cutter to cut grooves in marble, limestone, granite, and quartzite under a normal force of 7,000 lb. The size distributi

    Jan 1, 1974

  • NIOSH
    IC 8772 Projects To Expand Energy Sources In The Western States-An Update Of Information Circular 8719 - Survey Of Planned Or Proposed Coal Mines; Electric Generating, Coal Conversion, And Waste-To-Fuel Plants;

    By Charles H. Rich

    This Bureau of Mines report is an expansion and update of Information Circular 8719 and comprises maps and tables listing the name, location, and other pertinent data concerning certain fuel-related p

    Jan 1, 1978

  • NIOSH
    RI 6164 Design And Development Of Precast Concrete Mine Supports: A Progress Report ? Summary

    By G. T. Krempasky

    In an attempt to develop a suitable precast concrete support for underground use, two different models (1955 and 1958) of a five-piece concrete set were designed, fabricated, and tested under adverse

    Jan 1, 1963

  • NIOSH
    IC 8051 Mining Methods Of The Fort Dodge Limestone Company, Inc., Fort Dodge, Iowa ? Introduction And Summary

    By L. G. Marshall

    This report is one of a series published by the Federal Bureau of Mines, describing mining methods and performance at individual mining operations throughout the United States. The objective of these

    Jan 1, 1962

  • NIOSH
    RI 4336 Zinc Smelting In The Horizontal Retort Fired With Natural Gas 4. Burner Design

    By G. L. Oldright

    As a rule, the usual zinc retort smelter fired with natural gas made its own burners, of which there might be 300 per block, out of standard pipe fit-tings. The gas was discharged through a feeder pip

    Jan 1, 1948

  • NIOSH
    Introduction - The Mission (85814226-4440-4427-874a-f47ca8e121f0)

    Endless lines at service station gasoline pumps, limited travel at reduced speeds, thermostats set at an uncozy sixty-eight degrees in the dead of winter-these are but a few of the inconveniences and

    Jan 1, 1974

  • NIOSH
    RI 4335 Zinc Smelting In The Horizontal Retort Fired With Natural Gas 3. Nature Of Retort Charge Vs. Rates Of Spelter Production

    By G. L. Oldright

    In the first paper of this series (R. 1. 4333) on the cooperative work with the Eagle-Pitcher Mining & Smelting Co., changes in the nature of the sinter feed were measured by corresponding changes in

    Jan 1, 1948

  • NIOSH
    OFR-105(5)-84 Ground And Air Vibrations Caused By Surface Blasting. Volume 5 Air Vibrations: Monitoring And Predictor Assessment

    By Clayton R. Morlock

    Airblasts have been monitored at four coal strip mines and at a limestone quarry. Thirty-seven production blasts have been monitored with three seismographs, resulting in one hundred and eleven comple

    Jan 1, 1983

  • NIOSH
    IC 7695 Laboratories That Make Fire Assays, Analyses, And Tests Of Ores, Minerals, Metals, And Other Inorganic Substances - Introduction

    By B. R. Klahold

    Each year hundreds of mineral specimens and numerous inquiries regarding tests and analyses of minerals and related inorganic substances are received by the Bureau of Mines. In response to this demand

    Jan 1, 1954

  • NIOSH
    IC 8553 Mathematical Smoothing Of Digitized X-Ray Spectra

    By Harold E. Marr

    A simple algorithm is presented for processing digitized X-ray spectra obtained with a Si(Li) or Ge(Li) semiconductor detector coupled to a multi- channel analyzer. The simplified least-squares proced

    Jan 1, 1972

  • NIOSH
    OFR-126-85 Improved Skips, Guide Alignment, Dynamics, And Economics

    By F. A. Penning

    Improved skips, with lightweight cylindrical bodies, have made a significant contribution to advancing mine hoisting technology. New concept skips of aluminum bodies with rubber lining; fiberglas bodi

    Jan 1, 1985

  • NIOSH
    OFR-26(1)-83 Data Collection And Mathematical Modeling For Predicting Underground Mine Water Inflow

    This study of underground mine water inflow was initiated by the U. S. Bureau of Mines in March 1980. The objective of this study is to evaluate the hydrologic variables associated with surface water

    Jan 1, 1982

  • NIOSH
    RI 9224 - Foundation Response to Subsidence-Induced Ground Movements: A Case Study

    By Jeffrey S. Walker

    The purpose of this U.S. Bureau of Mines effort was to determine if ground movement caused by mining-induced subsidence is directly transferred to a structure and, if so, how that transfer takes place

    Jan 1, 1989

  • NIOSH
    RI 8687 Introduction of Sulfur Into Copper Converter Slags To Produce Copper Matte

    By J. I. Paige

    As part of a continuing effort to develop technology that maximizes mineral and metal recovery from domestic resources, the Bureau of Mines investigated a method to totally utilize copper converter sl

    Jan 1, 1982

  • NIOSH
    OFR-129-80 Preparation And Evaluation Of Self - Regenerative Carbon Nonoxide Detection Gels

    By G. N. Schrauzer

    Work has been carried out in the development and testing of carbon monoxide (CO) detection devices which use silica-gel impregnated with metal salts. If carbon monoxide is present, the ?detection gel?

    Jan 1, 1978