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Showing 44461 - 44480 of 82805 results
  • Microseismic Activity Associated With a Deep Longwall Coal Mine
    Microseismic Activity Associated With a Deep Longwall Coal Mine
    02/01/2002 | NIOSH
    A deep longwall coal mine was instrumented with a 3-D microseismic system to help determine the exact strata mechanics associated with rock failure, redistribution of stress and associated gob formation from the longwall.
    Public Domain
  • Assessment of Occupational Silica Exposures on Continuous Mining Operations
    Assessment of Occupational Silica Exposures on Continuous Mining Operations
    Goodman, Gerrit V. R. ;
    Listak, Jeffrey M.
    2002/02/01 | Mining Publications
    Data on dust-control practices, mining conditions and occupational exposures were gathered for approximately 80 underground continuous mining units. Despite silica contents on dust samples in excess of 5%, nearly forty units successfully maintained silica concentrations at or below 100 ug/m3 on a majority of occupational dust samples, while the rem ...
    Public Domain
  • Chemical and Physical Factors that Influence N0x Production During Blasting Exploratory Study
    Chemical and Physical Factors that Influence N0x Production During Blasting: Exploratory Study
    02/01/2002 | NIOSH
    Report on a NIOSH study to identify factors that may contribute to nitrogen oxides (NOx) production associated with non-ideal detonation of blasting agents.
    Public Domain
  • Inaccuracy of Area Sampling for Measuring the Dust Exposure of Mining Machine Operators in Coal Mines
    Inaccuracy of Area Sampling for Measuring the Dust Exposure of Mining Machine Operators in Coal Mines
    Kissell F ;
    Sacks H
    2002/02/01 | Mining Publications
    This study examines the accuracy of area sampling for measuring the dust exposure of mining machine operators in coal mines. The specific objective of this research was to find locations where an area sampler might work better than earlier studies have indicated. The results show that fixed-location area sampling cannot accurately predict the dust ...
    Public Domain
  • NIOSH Ventilation Research Addressing Diesel Emissions and Other Air Quality Issues in Nonmetal Mines
    NIOSH Ventilation Research Addressing Diesel Emissions and Other Air Quality Issues in Nonmetal Mines
    02/01/2002 | NIOSH
    Discusses current NIOSH research to improve mine ventilation and mine air quality, particularly for large opening mines.
    Public Domain
  • HandArm Vibration in a Group of HandOperated Grinding Tools
    Hand-Arm Vibration in a Group of Hand-Operated Grinding Tools
    Hudock, Stephen D. ;
    Mullinix L
    2002/02/01 | National Institute for Occupational Safety and Health (NIOSH)
    Vibration acceleration was triaxially and basicentrically measured, and digital-audio-tape-recorded with each axis separately evaluated using both the ANSI S3.34 and ACGIH hand-arm vibration (HAV) guidelines, for two pairs of pneumatic handheld grinders commonly used in metal fabrication operations including shipyards. Each tool pair consisted of a ...
    Public Domain
  • Enough is enough rural leaders must take a stand to end childhood fatalities on farms
    Enough is enough: rural leaders must take a stand to end childhood fatalities on farms
    Shutske J
    2002/02/01 | National Institute for Occupational Safety and Health (NIOSH)
    During the past 18 months, numerous children have died of traumatic agricultural injuries in Minncsota and other areas of the United States. Each year we lose about 100 children in the U.S. farm workplace to machinery entanglements, equipment run overs, livestock encounters, drowning and other hazardous situations. However, the last year and a half ...
  • FACE Facts No Seatbelts A Deadly Mistake
    FACE Facts: No Seatbelts? A Deadly Mistake!
    California. Department of Public Health
    2002/02/01 | Fatality Assessment and Control Evaluation Reports (FACE)
    The California Fatality Assessment and Control Evaluation (FACE) program has been investigating work-related deaths since 1992. The goal of the FACE program is to prevent these deaths by informing workers and managers of worksite hazards and how to avoid them. The two incidents below involve workers who died because there were no seatbelts, or the ...
  • Immunotoxicology of Organic Acid Anhydrides OAAs
    Immunotoxicology of Organic Acid Anhydrides (OAAs)
    Lewis, Daniel M. ;
    Siegel, Paul D.
    2002/02/01 | National Institute for Occupational Safety and Health (NIOSH)
    Organic acid anhydrides (OAAs) have considerable economic importance due to their extensive use in the production of alkyd, epoxy, and polyester resins. Occupational exposure to OAAs has been associated with a variety of health effects, which may be classified into two major categories of direct toxicity/irritant and hypersensitivity. The hypersens ...
    Public Domain
  • Numerical Methods of Statistics Book Review
    Numerical Methods of Statistics (Book Review)
    Wassell, James T.
    2002/02/01 | National Institute for Occupational Safety and Health (NIOSH)
    Considering the wide variety of statistical software packages available for data analysis, how important is it for today's practicing statistician to understand the details of programming in low level languages like C or FORTRAN? In Numerical Methods of Statistics, (John F. Monahan, ISBN 0-521-79168-5, Cabridge University Press) this question is an ...
    Public Domain
  • Investigation of the Jacking Force Capability of Tunnel Liners
    Investigation of the Jacking Force Capability of Tunnel Liners
    Barczak, Thomas M. ;
    Smith, Ron
    2002/02/01 | Mining Publications
    Steel liner plates, which are bolted together to form a shell, are commonly used to provide temporary protective linings in the tunneling industry to ensure the stability of the tunnel and safety of the workers until more permanent ground reinforcement can be installed. As the ground deforms to try and close the opening, the liner plate is radially ...
    Public Domain
  • Improving Silica Dust Control Through Targeted Research
    Improving Silica Dust Control Through Targeted Research
    Colinet, Jay F. ;
    Thimons, Edward D.
    2002/02/01 | Mining Publications
    NIOSH conducted a strategic planning effort to identify those areas in mining with the greatest research needs. Data analysis and stakeholder input identified the need to reduce worker exposure to respirable crystalline silica dust as a high priority area. MSHA dust sampling data were analyzed to target the mining commodities and occupations with t ...
    Public Domain
  • Microseismic Activity Associated with a Deep Longwall Mine
    Microseismic Activity Associated with a Deep Longwall Mine
    Heasley, Keith A. ;
    Ellenberger, John L.
    2002/02/01 | Mining Publications
    A deep longwall coal mine was instrumented with a three-dimensional microseismic system in order to help determine the exact strata mechanics associated with the rock failure, redistribution of stress and the associated gob formation from the longwall. Overall, 5,000 well calibrated seismic events were recorded during the mining of the panel. Analy ...
    Public Domain
  • Worker was run over by his tractor as he tried to jumpstart it
    Worker was run over by his tractor as he tried to jump-start it
    Oklahoma Fatality Assessment and Control Evaluation (OKFACE)  ...
    2002/01/30 | Fatality Assessment and Control Evaluation Reports (FACE)
    A 51-year old farm worker died on March 9, 2001 from injuries received when he was run over by the farm tractor he was operating. FACE investigators concluded that to prevent similar occurrences, employers should: 1. Maintain tractors and similar farm equipment in safe operating condition, including any original safety-related features and any retr ...
  • Correlation of DPOAE level shifts and ABR threshold shifts with noiseinduced histopathological changes in chinchillas some surprises
    Correlation of DPOAE level shifts and ABR threshold shifts with noise-induced histopathological changes in chinchillas: some surprises
    Ahmad M ;
    Bohne BA
    2002/01/27 | National Institute for Occupational Safety and Health (NIOSH)
    DPOAEs are thought to be produced by OHC. However, comparison with noise-induced pathology suggests that their origin is much more complex. DPOAE levels (f1&f2 at 55-75dB, f2=1.22 f1, 6 points/octave, 0.5-20kHz) & ABR thresholds were determined preexposure. Noise was a 4kHz OBN at 108dB (1.75h, n=6) or 85dB (24h, n=5). DPOAE level shifts (LS) & ABR ...
  • An augmented acoustic environment delays agerelated hearing loss in C57BL6J mice as revealed by DPOAEs and cochlear histopathology
    An augmented acoustic environment delays age-related hearing loss in C57BL/6J mice as revealed by DPOAEs and cochlear histopathology
    Bohne BA ;
    Candreia C
    2002/01/27 | National Institute for Occupational Safety and Health (NIOSH)
    Willott and Turner (Hear Res, 1999) reported that an augmented acoustic environment (AAE) delayed age-related hearing loss (AHL) in C57BL/6J (C57) mice. The present study assessed cochlear function at the outer hair cell (OHC) level by measuring distortion-product otoacoustic emissions (DPOAEs) in both AAE and control mice. These results were subse ...
  • Logger Killed While Freeing Maple Log With Chainsaw During Skidding Operation
    Logger Killed While Freeing Maple Log With Chainsaw During Skidding Operation
    Michigan Fatality Assessment and Control Evaluation (Project) (MIFACE)  ...
    2002/01/26 | Fatality Assessment and Control Evaluation Reports (FACE)
    A 21-year-old male laborer was fatally injured after being struck in the throat with a chain saw on a logging site. The victim was working with 2 other loggers, one was driving the cable skidder, and the other was felling trees. The cable skidder had one main line with four chokers and was removing the felled logs from the logging site. While movin ...
  • CSrcDependent Activation of the Epidermal Growth Factor Receptor and MitogenActivated Protein Kinase Pathway by Arsenic
    C-Src-Dependent Activation of the Epidermal Growth Factor Receptor and Mitogen-Activated Protein Kinase Pathway by Arsenic
    Hulderman T ;
    Luster M
    2002/01/25 | National Institute for Occupational Safety and Health (NIOSH)
    Environmental or occupational exposure to arsenic is associated with a greatly increased risk of skin, urinary bladder, and respiratory tract cancers in arseniasis-endemic areas throughout the world. Arsenic shares many properties of tumor promoters by affecting specific cell signal transduction pathways responsible for cell proliferation. The acti ...
    Public Domain
  • Chemoprotection by Phenolic Antioxidants
    Chemoprotection by Phenolic Antioxidants
    Kinneer K ;
    Ma Q
    2002/01/25 | National Institute for Occupational Safety and Health (NIOSH)
    Phenolic antioxidants exhibit anti-inflammatory activity in protection against chemical toxicity and cancer. To investigate the molecular mechanism of anti-inflammation, we analyzed the regulation of tumor necrosis factor (TNF-) expression in macrophages, a key step in inflammation, by the antioxidants. Whereas lipopolysaccharide (LPS), an inflamma ...
    Public Domain
  • Youth Landscaper Pinned Underneath Front End Loader
    Youth Landscaper Pinned Underneath Front End Loader
    Davis, Arthur W. ;
    Hetzler, William E.
    2002/01/25 | Fatality Assessment and Control Evaluation Reports (FACE)
    A 16-year-old landscaper was killed when the front end loader he was operating overturned pinning him underneath. The victim and his supervisor had just completed trimming and removing some trees from a residential property. They were returning equipment back to their storage yard. The supervisor, driving a dump truck, left a few minutes before the ...
44461 - 44480 / 82805