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  • NIOSH
    RI 9547 - Bending Fatigue Tests on Flattened Strand Wire Rope at High Working Loads

    By Richard C. Wang

    The U.S. Bureau of Mines established a wire rope research laboratory to examine the factors that affect the safety and the useful life of wire rope. In the most recent work, two 32-mm 6x27H flattened

    Jan 1, 2010

  • NIOSH
    RI 9454 - Vibration Testing of Off-Road Vehicle Seats

    By John C. Gagliardi, Walter K. Utt

    The U.S. Bureau of Mines, in cooperation with Carter Mining Co., conducted vibration tests of four off-road vehicle seats. The purpose of the tests was to determine which seat provided the best vibrat

    Jan 1, 1993

  • NIOSH
    Surface Haulage Truck Research ? Background

    By C. M. K. Boldt

    Between 1989 and 1991, the greatest number of accidents in surface coal and metal/nonmetal mines involved haulage trucks. In 1995, the most frequently cited factor contributing to the 100 fatalities i

    Jan 1, 1999

  • NIOSH
    OFR-63-81 Investigation Of The Formation Of Vapor Complexes Between Aluminum Chloride And Impurity Elements Associated With Aluminum Raw Materials

    By John P. Hager

    This study investigated the formation of vapor complexes between aluminum chloride and the chlorides of iron, titanium, and silicon. For the A1-Fe-C1 system the proposed gaseous complex species is Al2

    Jan 1, 1980

  • NIOSH
    Experimental And Modeling Investigation Of The Effect Of Ventilation On Smoke Rollback In A Mine Entry (4b9ff821-fae2-4443-8539-f1017029c853)

    By R. A. Franks, J. C. Edwards, L. Yuan

    To determine the critical air velocity for preventing smoke rollback, diesel-fuel fire experiments were conducted in the National Institute for Occupational Safety and Health’s (NIOSH) Pittsburgh Rese

  • NIOSH
    RI 7135 Measurement Of Oleic Acid On Mineral Surfaces Using A Gas-Liquid Chromatograph

    By Jerry L. Huiatt

    An accurate and reproducible procedure was developed using the gas-liquid chromatograph to quantitatively measure oleic acid on flotation products and in flotation water phases. The method comprised e

    Jan 1, 1968

  • NIOSH
    IC 6238 Mining Methods At The Morning Mine Of The Federal Mining And Smelting Company, Mullan, Idaho ? Introduction

    By C. E. Wethered

    This paper describing the mining methods employed by the Federal Mining and Smelting Co., operating the Morning mine at Mullan, Idaho, is one of a series being prepared by the United States Bureau of

    Jan 1, 1930

  • NIOSH
    RI 9222 - Acid Sulfation of Alunite

    By L. J. Froisland

    The U.S. Bureau of Mines conducted laboratory studies on sulfuric acid (H2S04) digestion of alunite [KA13(S04)2(OH)6] as a means for treating domestic deposits of this mineral. Digesting alunite ore i

    Jan 1, 1989

  • NIOSH
    RI 4844 Concentration Of Oxide Manganese Ore From Doyle-Smith Claims, Northern Yuma County, Ariz.

    By J. B. Zadra

    During the investigations of the occurrence of manganese in the western United States, the Bureau of Mines received a 100-pound sample of manganese ore from the Doyle-Smith property, Yuma County, Ariz

    Jan 1, 1952

  • NIOSH
    RI 3210 A Study of the Properties of Texas-New Mexico Polyhalite Pertaining to the Extraction of Potash VII. Effect of Particle Size, Sodium Chloride Concentration, and Temperature upon Hot Extraction by a Multistage Process

    By F. Fraas, J. E. Conley

    "The problem of recovering potash from the mineral polyhalite (K2SO4.MgSO4.2CaSO4.2H2O), occurring in large quantities in the salt beds of Texas and New Mexico, has been under investigation at the Non

    Sep 1, 1933

  • NIOSH
    Detrimental Effects Of Capacitance On High-Resistance-Grounded Mine Distribution Systems

    By Thomas Novak, Jeffrey L. Kohler, Joseph Sottile, Steve J. Gnapragasam

    Modern underground coal mines can be very large, having a total connected load in excess of l5 000 hp. These mines generally have many miles of high-power conveyor belts and 15 or more miles of high-v

  • NIOSH
    RI 8330 Catalytic Properties of Natural and Rare-Earth-Promoted Manganese Nodules

    By E. F. Ferrell

    The Bureau of Mines, U.S. Department of the Interior, studied the use of manganese sea nodules for catalytic oxidation in air of 1 pct carbon monoxide, 1 pct propane, and 1 pct methane. Catalysts were

    Jan 1, 1978

  • NIOSH
    OFR-44-79 Monitoring Of Mine Air Blast Pollutants From Six Explosives Tested In An Underground Mine

    By Duane L. Abata

    Toxic gases produced by the detonation of six explosives were measured in an underground hardrock metal mine during actual mining operations. The six explosives included two semi-gelatin dynamites, th

    Jan 1, 1978

  • NIOSH
    OFR-100-78 Improved Visibility Systems For Large Haulage Vehicles

    By Kent W. Hawley

    An improved visibility system was developed for use on the large (100 ton+) haulage trucks typically operated in open pit and surface mines. The improved visibility system provides the truck driver&ap

    Jan 1, 1978

  • NIOSH
    OFR-104-82 Exploratory Studies Of Flame And Explosion Quenching - Volume 1 - Summary

    By L. Douglas Smoot

    This research program was a theoretical and experimental study to improve understanding of the mechanisms of flame extinguishment in methane-coal dust-air-suppressant mixtures. This final report is a

    Jan 1, 1978

  • NIOSH
    RI 3300 Flotation of Langbeinite from Potash Field, NM & TX

    By S. R. B. Cooke, F. D. DeVaney

    "INTRODUCTION The potash mineral receiving the most attention in the newly discovered. New Mexico-Texas potash district near Carlsbad, N. M. is sylvite (potassium chloride). Sylvite contains more pota

    Feb 1, 1936

  • NIOSH
    Suggestion of a Cause-and-Effect Relationship Among Coal Rank, Airborne Dust, and Incidence of Workers’ Pneumoconiosis

    By Steven J. Page, John A. Organiscak

    Prolonged exposure to airborne respirable coal mine dust is responsible for coal workers' pneumoconi¬osis (CWP): Furthermore, miners who show evidence of higher radiographic categories of simple

  • NIOSH
    RI 9423 - Hybrid Fiber-Optic Electrochemical Carbon Monoxide Monitor

    By J. E. Chilton, C. R. Carpenter

    The U.S. Bureau of Mines has developed an intrinsically safe carbon monoxide (CO) monitoring system for mines by coupling a fiber-optic data telemetry (FODT) system with a prototype electro- chemical

    Jan 1, 1992

  • NIOSH
    RI 5735 Process Development In Removing Sulfur Dioxide From Hot Flue Gases (In Four Parts) 1. Bench-Scale Experimentation ? Summary

    By D. Bienstock

    In connection with air-pollution studies, the Bureau of Mines is cooperating with the U.S. Public Health Service in investigating the use of solids for removing sulfur dioxide in concentrations of les

    Jan 1, 1961

  • NIOSH
    RI 4306 A Combination Cleaning And Dewatering Process For Treating Fine Sizes Of Coal

    By B. W. Gandrud

    To say that the treatment and handling of the "fines" is the most difficult phase of coal preparation is probably an understatement of facts. It is the fine sizes from about 1/16-inch to 0 that are ma

    Jan 1, 1948