Results 61 - 70 of 646

• A Comparison of Beamforming Processing Techniques for Low Frequency Noise Source Identification in Mining Equipment
  11/1/2009 - Conference papers
  This paper describes NIOSH research to develop noise controls for mining equipment whose operators exceed the Permissible Exposure Level (PEL). Two alternative approaches are explored to the conventional beamforming algorithm.
• An Overview of Fundamental and Emerging Technologies to Monitor and Control Respirable Dust in Underground Coal Mines in the United States
  11/1/2009 - Conference papers
  This paper discusses a limited number of control technologies to reduce or eliminate harmful respirable dust.
• Numerical Study on Spontaneous Combustion of Coal in U.S. Longwall Gob Areas
  11/1/2009 - Conference papers
  In this paper, computational fluid dynamics (CFD) modeling results for both bleeder and bleederless ventilation systems are presented and the difference between two systems is discussed.
• NIOSH Mine Fire Research in the United States
  11/1/2009 - Conference papers
  This paper presents a summary of some of the mine fire research and provides an overview of the next phase of the NIOSH mine fire research program.
• Structural Vibration as a Noise Source on Vibrating Screens
  11/1/2009 - Conference papers
  For horizontal vibrating screens, NIOSH testing indicates that the screen sides and feed box are dominant noise sources for the 250 Hz through 800 Hz one-third octave bands, while the electric motor is the most significant source for the 1 kHz band.
• Design and Analysis of a New Method to Test Mine Seals
  10/1/2009 - Conference papers
  This report describes a new seal testing program that will provide essential validation data for mine seal analysis and design methods.
• Evaluation of Work Positions used by Continuous Miner Operators in Underground Coal Mines
  10/1/2009 - Conference papers
  By surveying experienced equipment operators about visual cues, researchers developed a method to gather data on the needs and practices of machine operators while controlling the machine and the reasons for needing particular operational cues.
• Evaluation of Visual Performance When Using Incandescent, Fluorescent, and LED Machine Lights In Mesopic Conditions
  10/1/2009 - Conference papers
  The main objective of the NIOSH research outlined in this paper was to explore the existence of visual performance improvements through the implementation of different machine mounted, lighting systems.
• Cementitious Plug Seal/Rock Interface Under Static and Dynamic Loadings
  10/1/2009 - Conference papers
  The objective of this research is to estimate the cementitious seal/rock interface properties from full scale test results.
• Safety and Health Regulatory Changes and Technology Developments in U.S. Coal Mining
  9/1/2009 - Conference papers
  This paper discusses changes that new legislation and regulations are making to the U.S. coal mining industry, and current research that is producing technologies to make mining safer.