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Showing 45121 - 45140 of 82972 results
  • Analysis of Roof Bolt Systems
    Analysis of Roof Bolt Systems
    Dolinar, Dennis R. ;
    Mark C
    2001/08/07 | Mining Publications
    Despite more than half a century of experience with roof bolting, no design method has received wide acceptance. To begin to improve this situation, the National Institute for Occupational Safety and Health (NIOSH) conducted a statistical study of roof bolt performance at a number of mines throughout the U.S. Case histories were collected from 37 m ...
    Public Domain
  • Failure Characteristics of Roof Falls at an Underground Stone Mine in Southwestern Pennsylvania
    Failure Characteristics of Roof Falls at an Underground Stone Mine in Southwestern Pennsylvania
    Iannacchione, Anthony T. ;
    Marshall, Thomas E.
    2001/08/07 | Mining Publications
    The location and time of 2,007 microseismic emissions from a limestone mine in southwestern Pennsylvania were compared with the development of mine faces and the characteristics of the mine layout. Based on analyses of these results, the occurrence of roof failure zones appears to be associated with certain characteristics of the mine plan. It was ...
    Public Domain
  • Sizing of Final Stumps for Safer Pillar Extraction
    Sizing of Final Stumps for Safer Pillar Extraction
    Mark C ;
    Zelanko, Joseph C.
    2001/08/07 | Mining Publications
    Pillar recovery continues to be one of the more hazardous activities in underground coal mining. Safety requires that the roof above the intersection remain stable until after the pillar has been extracted. Artificial supports (timbers and Mobile Roof Supports) are essential to roof stability, but so is the final remnant stump or pushout. Tradition ...
    Public Domain
  • Field Evaluation of Mobile Roof Support Technologies
    Field Evaluation of Mobile Roof Support Technologies
    Endicott M ;
    Maleki, Hamid N.
    2001/08/07 | Mining Publications
    This study presents a historic overview of the role of mobile roof support (MRS) technologies in improving stability and worker safety and presents the results of recent field evaluations of the MRS load rate monitoring device and other remote deformation-monitoring techniques. Field studies were implemented at two sites in cooperation among resear ...
    Public Domain
  • Typical Complete StressStrain Curves of Coal
    Typical Complete Stress-Strain Curves of Coal
    Morsy K ;
    Peng S
    2001/08/07 | National Institute for Occupational Safety and Health (NIOSH)
    This study presents a typical stress-strain model for coal material using the available in-situ and laboratory tests data conducted on coal. This model can be used as a basic coal model in finite element applications. The effects of pillar width-to-height ratio and the confining pressure have been considered in this model. The extended Drucker-Prag ...
  • An Example from Proficiency Testing of the Application of Principal Components to the Estimation of Variance Components in Mixed Models
    An Example from Proficiency Testing of the Application of Principal Components to the Estimation of Variance Components in Mixed Models
    Shulman, Stanley A.
    2001/08/05 | National Institute for Occupational Safety and Health (NIOSH)
    A common problem in lab proficiency testing is the estimation of measurement error and lab-to-lab variability, when duplicate samples are not available. Since measurement errors are often assumed to constitute a statistically independent set, the variance-covariance matrix should be the sum of a diagonal matrix (corresponding to measurement error) ...
    Public Domain
  • The Evolving Mining Workforce Training Issues
    The Evolving Mining Workforce: Training Issues
    Brnich, Michael J. ;
    Kowalski, Kathleen M.
    2001/08/05 | Mining Publications
    Safety and health professionals from all sectors of industry recognize that training is a critical element of an effective safety and health program. A major concern in the mining industry today is how to train the present aging workforce, plus the expected influx of new and less experienced miners and mine operators as the cohort of older workers ...
    Public Domain
  • Spontaneous Combustion Coal Characterization and Environmental Factors
    Spontaneous Combustion: Coal Characterization and Environmental Factors
    Smith, Alex C.
    2001/08/05 | Mining Publications
    In the West, during the last few years, the issue of spontaneous combustion, particularly coal characterization and environmental factors that affect spontaneous combustion, has been getting much attention in the mining industry. Spontaneous combustion is the self-ignition of a substance to rapid oxidation of its constituents without an external so ...
    Public Domain
  • Assessing and Monitoring Open Pit Mine Highwalls
    Assessing and Monitoring Open Pit Mine Highwalls
    Girard, Jami M.
    2001/08/05 | Mining Publications
    Slope stability accidents are one of the leading causes of fatalities at U.S. surface mining operations. The Spokane Research Laboratory of the National Institute for Occupational Safety and Health (NIOSH) is currently conducting research to reduce the fatalities associated with slope failures and other unexpected failures of ground. The purpose of ...
    Public Domain
  • Reducing Materials Handling Injuries in Underground Mines
    Reducing Materials Handling Injuries in Underground Mines
    Clark, Curtis C. ;
    Patton, Philip W.
    2001/08/05 | Mining Publications
    Back injuries from handling materials in underground mines continue to be a major safety problem. In spite of the ingenuity of many people and the development of numerous mechanized aids, the number of materials-handling injuries remains second only to the number of roof fall injuries in underground coal mines. Relocation and repositioning of elect ...
    Public Domain
  • Pretesting the Survey of Respirator Uses and Practices SRUP Cognitive and Field Testing of a New Establishment Survey
    Pretesting the Survey of Respirator Uses and Practices (SRUP): Cognitive and Field Testing of a New Establishment Survey
    Fisher SK ;
    Frampton K
    2001/08/05 | National Institute for Occupational Safety and Health (NIOSH)
    Respirators are used to minimize or eliminate potential health risks to employees stemming from occupational hazards found in many industries. The National Institute for Occupational Safety and Health (NIOSH) has developed a new survey, the "Survey of Respirator Uses and Practices (SRUP)," to collect accurate information about respirator use in U.S ...
  • Proceedings of the 32nd Annual Institute on Mining Health Safety and Research Salt Lake City Utah August 57 2001
    Proceedings of the 32nd Annual Institute on Mining Health, Safety and Research, Salt Lake City, Utah, August 5–7, 2001
    Jenkins, F. Michael ;
    Langton J
    2001/08/05 | Mining Publications
    This Proceedings contains the presentations made at the Thirty Second Annual Institute on Mining Health, Safety and Research, held at the University of Utah in Salt Lake City, August 5 - 7, 2001. The first twenty-seven Annual Institutes were held at Virginia Tech in Blacksburg, Virginia. The Twenty-Eighth Annual Institute was held in Salt Lake City ...
    Public Domain
  • Responders to Underground Mine Fires
    Responders to Underground Mine Fires
    Conti, Ronald S.
    2001/08/05 | Mining Publications
    Fire is a major concern for those who work in underground mines. A mine fire can occur at anytime and often results in a partial or total evacuation of mine personnel and could result in the loss of lives. Therefore, having a workforce that is well trained to prevent, detect, and fight a fire is important. This paper focuses on responders' prepared ...
    Public Domain
  • Stepwise Nonparametric Multiple Comparisons in Randomized Complete Block Designs
    Stepwise Nonparametric Multiple Comparisons in Randomized Complete Block Designs
    Bena J ;
    Groggel D
    2001/08/05 | National Institute for Occupational Safety and Health (NIOSH)
    Many commonly used nonparametric multiple comparison procedures have poor power for pairwise comparisons involving treatments whose effects are near the middle of an increasing ordered set. Pairwise all-subset procedures are compared to procedures using joint ranks and pairwise ranks in a Monte Carlo study. Tha pairwise all-subset procedures often ...
    Public Domain
  • Mold Setters Head Struck By a Cycling Singleside Gantry Robot
    Mold Setter’s Head Struck By a Cycling Single-side Gantry Robot
    Michigan Fatality Assessment and Control Evaluation (Project) (MIFACE)  ...
    2001/08/05 | Fatality Assessment and Control Evaluation Reports (FACE)
    On January 19, 2001, a 29-year-old male died from injuries sustained when he was struck on the head by a cycling single-side gantry robot. The victim had recently performed a mold change on a 1500-ton horizontal injection-molding machine (HIMM). He was apparently looking for tools that he may have left within the machine during the set-up operation ...
  • Residential Structure Fire Claims the Life of One Career Fire Fighter Alabama
    Residential Structure Fire Claims the Life of One Career Fire Fighter – Alabama
    Mezzanotte, Thomas P. ;
    Cortez, Kimberly L.
    2001/08/03 | Fire Fighter Fatality Investigation and Prevention Program (FFFIPP)
    Death in the Line of Duty…a Summary of a NIOSH Fire Fighter Fatality InvestigationOn April 20, 2000, a 33-year-old male career fire fighter was fatally injured while battling a residential structure fire. At approximately 1630 hours, Central Dispatch was notified of a reported structure fire at a single family residence. At 1631 hours, Central Disp ...
    Public Domain
  • A Lieutenant Dies and Three Fire Fighters of a Career Department Were Injured When the Truck They Were Responding in Was Struck by Another Vehicle Illinois
    A Lieutenant Dies and Three Fire Fighters of a Career Department Were Injured When the Truck They Were Responding in Was Struck by Another Vehicle – Illinois
    Cortez, Kimberly L. ;
    Romano, Nancy T.
    2001/08/02 | Fire Fighter Fatality Investigation and Prevention Program (FFFIPP)
    Death in the Line of Duty…a Summary of a NIOSH Fire Fighter Fatality InvestigationOn April 29, 2000, a 43-year-old male career Lieutenant died as the result of injuries he received when the truck he was responding in was struck by a pickup truck. At approximately 1150 hours, Central Dispatch notified a career fire department of an automatic alarm a ...
    Public Domain
  • Residential House Fire Claims the Life of One Career Fire Fighter Florida
    Residential House Fire Claims the Life of One Career Fire Fighter – Florida
    Washenitz, Frank C. II ;
    Mezzanotte, Thomas P.
    2001/08/02 | Fire Fighter Fatality Investigation and Prevention Program (FFFIPP)
    Death in the Line of Duty…a Summary of a NIOSH Fire Fighter Fatality InvestigationOn November 25, 2000, a 30-year-old career male fire fighter (the victim) died in a residential house fire. At 0135 hours, fire fighters received a call of a reported structure fire. Engines 5, 2, 1, Ladder 11, and Rescue 32 responded to the early morning call. At 014 ...
    Public Domain
  • Asphalt Fume Exposures During the Manufacture of Asphalt Roofing Products Current Practices for Reducing Exposures
    Asphalt Fume Exposures During the Manufacture of Asphalt Roofing Products: Current Practices for Reducing Exposures
    National Institute for Occupational Safety and Health
    2001/08/01 | NIOSH Numbered Publications
    This document represents a collaborative effort of the National Institute for Occupational Safety and Health (NIOSH), the National Roofing Contractors Association (NRCA), the Asphalt Roofing Manufacturers' Association (ARMA), the Asphalt Institute (AI), and the United Union of Roofers, Waterproofers, and Allied Workers to reduce worker exposures to ...
    Public Domain
  • Correspondence Prevalence of Latex Allergy
    Correspondence: Prevalence of Latex Allergy
    Page, Elena H.
    2001/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    I am writing in response to Dr. Yeang's article "Prevalence of latex allergy may be vastly overestimated when determined by in vitro assays." Positive predictive value (PPV) is dependent on both test specificity and the prevalence of the condition in the population. As prevalence declines, so does the PPV; therefore, the author is correct in statin ...
    Public Domain
45121 - 45140 / 82972