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Showing 47361 - 47380 of 82802 results
  • Development and Evaluation of a Training Exercise for Construction Maintenance and Repair Work Activities
    Development and Evaluation of a Training Exercise for Construction, Maintenance and Repair Work Activities
    Rethi, Lynn L. ;
    Barrett, Edward A.
    2000/01/01 | Mining Publications
    Recent studies have shown that miners performing construction, maintenance, and repair (CMR) work activities in the conduct of their jobs incur from 39 to 65 percent of all reported injuries in the mining industry. The number is particularly high at surface aggregate operations; however, the problem exists at all mining locations and commodities. T ...
    Public Domain
  • Detecting Problems with Mine Slope Stability
    Detecting Problems with Mine Slope Stability
    Girard, Jami M. ;
    McHugh, Edward L.
    2000/01/01 | 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. The purpose of this paper is to discuss some of this r ...
    Public Domain
  • Best Practices to Mitigate Injuries and Fatalities from Rock Falls
    Best Practices to Mitigate Injuries and Fatalities from Rock Falls
    Mark, Christopher ;
    Iannacchione, Anthony T.
    2000/01/01 | Mining Publications
    Falls of ground continue to be one of the most serious causes of injury to U.S. miners. Of the 256 fatal injuries that occured in mining between 1996 and 1998, 52 (20%) were caused by falls of ground. Falls of ground affect some sectors of the mining industry more severely than others. For instance, nearly 40% of the 98 coal mine fatalities between ...
    Public Domain
  • Training to Improve Emergency Communication Skills
    Training to Improve Emergency Communication Skills
    Mallett, Launa G. ;
    Brnich, Michael J. Jr.
    2000/01/01 | Mining Publications
    This paper introduces a method for teaching workers to communicate necessary information when giving or receiving emergency warning messages. Research has shown that when an emergency occurs, people may not get the information they need to take appropriate action. Interviews conducted with 48 underground coal miners who had escaped mine fires revea ...
    Public Domain
  • Implications of Recent NIOSH Tracer Gas Studies on Bleeder and Gob Gas Ventilation Design
    Implications of Recent NIOSH Tracer Gas Studies on Bleeder and Gob Gas Ventilation Design
    Mucho, Thomas P. ;
    Diamond, William P.
    2000/01/01 | Mining Publications
    The National Institute for Occupational Safety and Health (NIOSH) has been conducting research at a Pittsburgh Coalbed longwall mine to evaluate and optimize bleeder ventilation and gob gas venthole longwall methane control systems. Gas flow into these two methane control systems was investigated using a combination of Sulphur Hexafluoride (SF6) tr ...
    Public Domain
  • Lightning Propagation Through the Earth and Its Potential for Methane Ignitions in Abandoned Areas of Underground Coal Mines
    Lightning Propagation Through the Earth and Its Potential for Methane Ignitions in Abandoned Areas of Underground Coal Mines
    Novak, Thomas ;
    Fisher, Thomas J.
    2000/01/01 | Mining Publications
    Strong circumstantial evidence suggests that lightning has initiated methane explosions in abandoned and sealed areas of underground coal mines. The Mine Safety and Health Administration (MSHA) investigated several of these occurrences within recent years. The investigated explosions occurred at significant depths, ranging from 500 ft to 1200 ft. D ...
    Public Domain
  • Mine Rescue and Response 2000
    Mine Rescue and Response [2000]
    Conti, Ronald S.
    2000/01/01 | Mining Publications
    This paper describes technology and training that has been identified for underground emergency responder. Historically, underground mine rescue teams have only received training in the course of actual emergencies, or in simulated mine environments, usually on the surface, with placards to identify objects and hazards. Also, while U.S. federal reg ...
    Public Domain
  • Experimental Investigation of OnLine Methods for Incipient Fault Detection
    Experimental Investigation of On-Line Methods for Incipient Fault Detection
    Sottile, Joseph ;
    Trutt, Frederick C.
    2000/01/01 | Mining Publications
    Condition-based maintenance (CBM) of industrial equipment is generally recognized as being the most cost-effective means for improving equipment availability. However, prerequisite to successful implementation of CBM is a reliable detector of failing components. One such detector, termed the effective negative-sequence impedance, had previously bee ...
    Public Domain
  • The Effects of Disaster on Workers A Study of Burnout in Investigators of Serious Accidents and Fatalities in the US Mining Industry
    The Effects of Disaster on Workers: A Study of Burnout in Investigators of Serious Accidents and Fatalities in the U.S. Mining Industry
    Kowalski, Kathleen M. ;
    Podlesny, Audrey
    2000/01/01 | Mining Publications
    The Maslach Burnout Inventory (MBI) was administered and scored for 154 Mine Safety and Health Administration (MSHA), U.S. Department of Labor, employees who serve as accident investigators for serious accidents and fatalities as part of their job duties. The subjects responded anonymously during a workshop on stress. The subjects consisted of rand ...
    Public Domain
  • NIOSH Research for Controlling Respirable Dust and Methane Gas on Continuous Miner Faces
    NIOSH Research for Controlling Respirable Dust and Methane Gas on Continuous Miner Faces
    Goodman, Gerrit V. R. ;
    Taylor, Charles D.
    2000/01/01 | Mining Publications
    The importance of controlling respirable dust and methane gas levels in underground coal mining cannot be underestimated. While respirable dust can significantly affect the occupational health of underground coal miners, methane gas accumulations pose significant safety concerns for these same workers. Water sprays and machine mounted dust scrubber ...
    Public Domain
  • Remote Controls on an Agricultural Tractor for Performing ASAESAE Field Upset Tests
    Remote Controls on an Agricultural Tractor for Performing ASAE/SAE Field Upset Tests
    Lutz, Timothy J. ;
    Homce, Gerald T.
    2000/01/01 | Mining Publications
    A standard Ford 4600 agricultural tractor was converted to remote control to perform ASAE/SAE field upset tests (rear rollover and side rollover). This paper discusses the engineering process to develop a remote-controlled tractor in determining the critical parameters of operation, to choosing appropriate actuators, designing the circuitry to cont ...
    Public Domain
  • Protecting Workers from Toxic Fumes Generated by Explosives
    Protecting Workers from Toxic Fumes Generated by Explosives
    Mainiero, Richard J.
    2000/01/01 | Mining Publications
    In any construction project involving explosives, care must be taken to protect workers from carbon monoxide (CO) generated by blasting operations. CO is an odorless, colorless gas that can cause illness and death by asphyxiation. In general, the first symptoms include headache, fatigue and lightheadedness. At higher exposures to CO, skin flushing, ...
    Public Domain
  • The Aging Workforce An Emerging Issue in the Mining Industry
    The Aging Workforce: An Emerging Issue in the Mining Industry
    Fotta, Barbara ;
    Bockosh, George R.
    2000/01/01 | Mining Publications
    According to the Bureau of Labor Statistics (BLS), workforce estimates of median age suggest that the median age of the mining workforce, which has been experiencing overall declines in numbers of employees, is rising more rapidly than for the overall U.S. civilian labor force. In the absence of detailed demographic data for the mining industry, th ...
    Public Domain
  • Utilizing the Advance and Relieve Method to Reduce Horizontal Stress Effects on the Mine Roof A Case Study
    Utilizing the “Advance and Relieve” Method to Reduce Horizontal Stress Effects on the Mine Roof: A Case Study
    Dolinar, Dennis R. ;
    Mucho, Thomas P.
    2000/01/01 | Mining Publications
    A room and pillar coal operation in central Pennsylvania was experiencing roof cutters and long running roof falls caused by high horizontal stresses. The roof conditions created hazards for the miners, and caused several production panels to be abandoned prematurely. The mine requested assistance from the National Institute for Occupational Safety ...
    Public Domain
  • Using the Internet to Train Emergency Command Center Personnel
    Using the Internet to Train Emergency Command Center Personnel
    Glowacki, Audrey F. ;
    Unger, Richard L.
    2000/01/01 | Mining Publications
    Well-prepared personnel and an effective emergency response plan are essential components of any emergency command center. Unfortunately, evaluating emergency preparedness is often difficult until a disaster actually occurs. For example, unexpected events may develop during an emergency that were not considered during the planning phase. Also, the ...
    Public Domain
  • The Forgotten Denominator Pillar Loading
    The Forgotten Denominator, Pillar Loading
    Heasley, Keith A.
    2000/01/01 | Mining Publications
    In the last few decades, a considerable amount of effort was directed at accurately determining the coal/pillar strength to use for safety designing coal mines. The outcome of this early work was the well known Obert-Duvall, Holland-Gaddy, Bieniawski, and Salamon-Munro equations for coal pillar strength. All of these equations were developed for, a ...
    Public Domain
  • Toward a Typology of Dynamic and Hazardous Work Environments
    Toward a Typology of Dynamic and Hazardous Work Environments
    Scharf, Ted ;
    Vaught, Charles
    2000/01/01 | Mining Publications
    Mining, fishing, logging, farming, construction, and transport: by many measures, these are the most hazardous industries in the U.S. Is there an underlying consistency to the fatality records? Or are the causes of occupational fatalities so unique to each industry that no common features can be determined? On the one hand, we see the same jobs ran ...
    Public Domain
  • Shear Strength Evaluation of ClayRock Mixtures
    Shear Strength Evaluation of Clay-Rock Mixtures
    Iannacchione, Anthony T. ;
    Vallejo, Luis E.
    2000/01/01 | Mining Publications
    At present, there is little knowledge concerning the shear strength of clays containing floating rock particles with concentrations from 0 to 30%. In practice, the effect of rock particles is typically disregarded in shear strength analysis. The two primary reasons for this are: 1) a lack of agreement concerning the influence of rock particles on m ...
  • Summary of Field Measurements of Roof Bolt Performance 2000
    Summary of Field Measurements of Roof Bolt Performance [2000]
    Mark, Christopher ;
    Dolinar, Dennis R.
    2000/01/01 | Proceedings: new technology for coal mine roof support. Mark C, Dolinar DR, Tuchman RJ, Barczak TM, Signer SP, Wopat PF, eds. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2000-151; (IC 9453), 2000 Oct; :81-98 | National Institute for Occupational Safety and Health (NIOSH)
    During the 1990s, the former U.S. Bureau of Mines conducted a number of field studies in which the performance of different types of roof bolts were evaluated in different geologic environments. The studies used a standard suite of measurements, including multipoint extensometers, strain-gauged roof bolts, and roof bolt load cells. The sites were c ...
    Public Domain
  • Evaluation of TwoPhase Spray System for Airborne Dust Control in a Longwall Gallery
    Evaluation of Two-Phase Spray System for Airborne Dust Control in a Longwall Gallery
    Belle, B. K. ;
    Ramani, R. V.
    2000/01/01 | Mining Publications
    The increased effectiveness of a two-phase spray system (TPSS) over a single-phase system (SPSS) for dust suppression is reported in several laboratory studies. The dust collection efficiencies of SPSS and TPSS were studied in a model experimental longwall gallery facility at Pittsburgh Research Laboratory at NIOSH (USA). The experimental design co ...
    Public Domain
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