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Showing 47861 - 47880 of 82805 results
  • An Investigation of Longwall Gob Gas Behavior and Control Methods
    An Investigation of Longwall Gob Gas Behavior and Control Methods
    Diamond, William P. ;
    Garcia F
    1999/06/11 | Mining Publications
    The National Institute for Occupational Safety and Health (NIOSH) has initiated the use of a tracer gas in field studies to characterize geologic and mining factors influencing the migration of longwal1 gob gas. Three studies have been conducted using sulfur hexafluoride (SF 6) at a coal mine in the Northern Appalachian Basin operating in the Pitts ...
    Public Domain
  • Ventilating the Box Cut of a TwoPass 40 ft Extended Cut
    Ventilating the Box Cut of a Two-Pass 40 ft Extended Cut
    Taylor, Charles D. ;
    Thimons, Edward D.
    1999/06/11 | Mining Publications
    On a continuous miner coal face methane concentrations are affected by the quantity of fresh intake air reaching the face. When mining the box cut on a 12.2m (40ft) two-pass extended cut face, the continuous miner is always at the point of deepest penetration, and the operation of the machine-mounted dust scrubber and water spray system improve the ...
    Public Domain
  • Multiple Velocity Aerosol Sampling Inlets to Conform with Revised ACGIH Criteria
    Multiple Velocity Aerosol Sampling Inlets to Conform with Revised ACGIH Criteria
    Fang CP ;
    Xiong JQ
    1999/06/10 | Grant Final Reports
    A better evaluation of the hazard posed by airborne particles is possible if particles that do not contribute to the hazard are excluded from the airborne concentration analysis. Therefore, the criteria for the inhalable, thoracic and respirable fractions of airborne particles, proposed by Soderholm (1989), were adopted by the American Conference o ...
  • Issues Regarding the Safety and Health of Emergency Workers
    Issues Regarding the Safety and Health of Emergency Workers
    Kowalski, Kathleen M. ;
    Vaught C
    1999/06/08 | Mining Publications
    Emergency personnel, like all workers, carry out their duties within an environment composed of a set of discrete elements. First, there is the emergency itself. Whether a forest fire in France, a tornado in the American Midwest, or a mining disaster in Russia, the emergency imposes certain exigencies upon the responders. Second, a social structure ...
    Public Domain
  • Two Electricians Die When A Bolt Bin Falls 8 Floors At Construction Site
    Two Electricians Die When A Bolt Bin Falls 8 Floors At Construction Site
    Brown, Margee ;
    Parker, David L.
    1999/06/07 | Fatality Assessment and Control Evaluation Reports (FACE)
    On the day of the incident, a 46-year-old worker and a 49-year-old worker (victims) died of injuries sustained when a large bolt bin fell at a commercial construction site. The victims worked as electricians for an electrical company that was subcontracted to complete the electrical work on an office tower complex that was under construction. The t ...
  • Electrically Excited Vibrations for Condition Monitoring of Synchronous Machine Windings an Experimental Study
    Electrically Excited Vibrations for Condition Monitoring of Synchronous Machine Windings – an Experimental Study
    Kohler, Jeffrey L. ;
    Sottile, Joseph
    1999/06/07 | Mining Publications
    Efforts to apply mechanical vibration technology to the condition monitoring of ac induction motors have generally been focused on areas relating to unbalance, bearing condition, eccentricities, and other mechanical phenomena. However, theory predicts that electrical winding deterioration in these machines will modify internal magnetic forces and t ...
    Public Domain
  • Validation of a passive sampler for ketones
    Validation of a passive sampler for ketones
    Que Hee-S ;
    Tsai-S
    1999/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    O-(2.3,4.5.6-pentafluorobenzyl) hydroxylamine hydrochloride (PFBHA) has been used to analyze aldehydes in water because of its fast quantitative reaction to form oximes suitable for detection at the picogram (pg) level by gas chromatography/mass spectrometry (GCIMS) and gas chromatography/electron capture detection (GC/ECD). The PFBHA method also h ...
  • New analytical method for determining aldehydes in aqueous samples
    New analytical method for determining aldehydes in aqueous samples
    Que Hee-S ;
    Tso-JC
    1999/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    Carbonyl compounds (especially low molecular weight aldehydes) are receiving increasing attention in workplace air exposures and water pollution. Formaldehyde, acetaldehyde. furfural. and crotonaldehyde are known animal carcinogens. There is need to have a melhod that can be utilized to analyze trace amounts of aldehydes. particularly in ground wat ...
  • Sampling and analysis of airborne environmental aldehydes and ketones
    Sampling and analysis of airborne environmental aldehydes and ketones
    Que Hee-S ;
    Shen-Y
    1999/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    A high flow solid sorbent dynamic sampling method for ppb (v/v) airborne aldehydes and ketones was based on their chemisorption to 10% (w/w) O- (2.3,4,5.6-pentafluorobenzyl) hydroxylamine hydrochloride (PFBHA) on Tenax TA. The method is to be used for both ambient outdoor and indoor air. Fifteen carbonyl compounds were studied as target chemicals ( ...
  • SingleFamily Dwelling Fire Claims the Life of a Volunteer Fire Fighter Indiana
    Single-Family Dwelling Fire Claims the Life of a Volunteer Fire Fighter – Indiana
    Cortez, Kimberly L. ;
    Baldwin, Tommy N.
    1999/06/04 | Fire Fighter Fatality Investigation and Prevention Program (FFFIPP)
    Death in the Line of Duty…a Summary of a NIOSH Fire Fighter Fatality InvestigationOn January 9, 1999, a male volunteer fire fighter (the victim) died of smoke inhalation while performing an interior attack on a fire at a single-family dwelling. A city police officer, who was first on-scene, entered the structure to try to extinguish the blaze with ...
    Public Domain
  • Operator Dies When Caught Between Mast and Cage of Forklift in a Massachusetts Warehouse
    Operator Dies When Caught Between Mast and Cage of Forklift in a Massachusetts Warehouse
    Massachusetts Fatality Assessment and Control Evaluation Project (Massachusetts FACE)  ...
    1999/06/04 | Fatality Assessment and Control Evaluation Reports (FACE)
    On November 23, 1998, a 40 year old male forktruck operator died of injuries sustained when he was caught between the mast and the cage of his forklift truck. He was placing a load in a narrow row when the load became stuck. The forklift truck operator apparently placed the load on the floor, backed up the truck, tilted the mast forward and stood u ...
  • Illnesses Associated with Occupational Use of FleaControl Products California Texas and Washington State 19891997
    Illnesses Associated with Occupational Use of Flea-Control Products – California, Texas, and Washington State, 1989–1997
    Mehler, Louise ;
    Shannon, J.
    1999/06/04 | Weekly Report: Morbidity and Mortality Weekly Report (MMWR)
    Dips, shampoos, and other insecticide-containing flea-control products can produce systemic illnesses or localized symptoms in the persons applying them. Although these products may pose a risk to consumers, they are particularly hazardous to pet groomers and handlers who use them regularly. Illnesses associated with flea-control products were repo ...
    Public Domain
  • Tower Hand Dies After 230Foot Fall From Communications TowerNorth Carolina
    Tower Hand Dies After 230-Foot Fall From Communications Tower--North Carolina
    National Institute for Occupational Safety and Health. Fatality Assessment and Control Evaluation (FACE) Program
    1999/06/03 | Fatality Assessment and Control Evaluation Reports (FACE)
    On November 13, 1998, a 40-year-old male tower hand (the victim) died after falling 230 feet from a 250-foot communications tower. Office of the North Carolina Occupational Safety and Health Administration (NCOSHA) notified the Division of Safety Research (DSR) of this fatality. DSR offered technical assistance and on December 15, 1998, a safety sp ...
    Public Domain
  • Black Lung Anatomy of a Public Health Disaster Book Review
    Black Lung: Anatomy of a Public Health Disaster (Book Review)
    Wagner, Gregory R.
    1999/06/03 | National Institute for Occupational Safety and Health (NIOSH)
    In the classic story that exemplifies the public health approach to disease prevention, John Snow removed the handle of the Broad Street pump in London to halt a cholera epidemic. Snow knew neither the agent of the disease nor its mechanism, but he acted after making reasoned conclusions drawn from systematic observations of the distribution of the ...
    Public Domain
  • Maintenance Technician Dies After Falling Eight Feet From Ladder
    Maintenance Technician Dies After Falling Eight Feet From Ladder
    Parker, David L. ;
    Wahl, George
    1999/06/02 | Fatality Assessment and Control Evaluation Reports (FACE)
    A 51-year-old male maintenance technician (victim) died of injuries he sustained after he fell approximately eight feet at a food processing facility. The victim and a coworker were preparing to modify chemical lines in a room that contained liquid chemicals used to clean and sanitize food processing equipment. One end of a catwalk that was used to ...
  • Ornamental Iron Installer dies when crushed by load that fell off forklift in California
    Ornamental Iron Installer dies when crushed by load that fell off forklift in California
    Harrison, Robert ;
    Styles, Laura
    1999/06/02 | Fatality Assessment and Control Evaluation Reports (FACE)
    A 37-year-old male ornamental iron installer leadman (decedent) died when he fell off the forks of a forklift and was crushed by its falling load. He and his co-workers were installing iron fencing sections that were eight feet high by ten feet long. They weighed two hundred and fifteen pounds each. In order to move the last five panels to be insta ...
  • An Overview of Technology and Training Simulations for Mine Rescue Teams
    An Overview of Technology and Training Simulations for Mine Rescue Teams
    06/01/1999 | NIOSH
    A series of mine rescue training exercises was developed, conducted, and evaluated by NIOSH in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Deep Mine Safety and several mining companies.
    Public Domain
  • Practical BoundaryElement Modeling for Mine Planning
    Practical Boundary-Element Modeling for Mine Planning
    Chekan, Gregory J. ;
    Heasley, Keith A.
    1999/06/01 | Mining Publications
    As part of the initial investigation and validation of a new boundary-element formulation for stress modeling in coal mines, the underground stresses and displacements at two multiple-seam coal mines with unique stress problems were modeled and predicted. The new program, LAMODEL, calculates stresses and displacements at the seam level and at reque ...
    Public Domain
  • Estimation of Rodent Airway Parameters Using a Two Chamber Plethysmograph
    Estimation of Rodent Airway Parameters Using a Two Chamber Plethysmograph
    Frazer DG ;
    Friend KA
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    A system was developed to estimate airway parameters of rodents using a two chamber plethysmograph. Rodent respiration in a two chamber flow-flow plethysmograph was modeled as a second order system in the continuous time domain. The model was converted to the equivalent digital filter, and the animal respiratory signals fitted to the filter using a ...
    Public Domain
  • Zinc Exposure in Chinese Foundry Workers
    Zinc Exposure in Chinese Foundry Workers
    Audette RJ ;
    Chum E
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Inhalational exposure to zinc oxide fumes is associated with metal fume fever, a self-limited but very uncomfortable condition closely resembling influenza. Very little is known regarding the toxicokinetics of inhaled zinc, making the interpretation of zinc measurements in serum and urine problematic. Twenty workers in a zinc foundry in Baiyin, Peo ...
47861 - 47880 / 82805