Results 51 - 60 of 975

• Effects of Diesel Exhaust Aftertreatment Devices on Concentrations and Size Distribution of Aerosols in Underground Mine Air
  9/1/2009 - Peer reviewed journal articles
  This paper summarizes the results of a study conducted to evaluate the effects that several types of DPFs, DFEs, and a DOC have on the concentration and size distribution of diesel aerosols in an underground mine.
• Forecasting Gob Gas Venthole Production Performances Using Intelligent Computing Methods for Optimum Methane Control in Longwall Coal Mines
  9/1/2009 - Peer reviewed journal articles
  In this paper, the total gas flow rates and methane percentages from 10 GGVs were analyzed. The results showed that the two-hidden layer model predicted total production and the methane content of the GGVs with more than 90% accuracy.
• Technological Aspects of Solid-State and Incandescent Sources for Miner Cap Lamps
  9/1/2009 - Peer reviewed journal articles
  This paper describes the performance of LED and INC sources in cap lamps in terms of correlated color temperature, color rendering, light output, electric power, ambient temperature and air flow, and light source aging.
• Continuous Mining: A Pilot Study of the Role of Visual Attention Locations and Work Position in Underground Coal Mines
  8/1/2009 - Peer reviewed journal articles
  The purpose of this study was to perfect a method of gathering information on work positions and Visual Attention Locations needed by operators during the cutting phase and while the continuous miner trams to a new location.
• Stability Mapping to Examine Ground Failure Risk: A Field Study at a Limestone Mine
  7/1/2009 - Conference papers
  This paper presents a description of geologic settings, mining conditions, rockmass characterization with geotechnical risk assessment, analysis, mapping, and control techniques used at an underground stone mine in Central Pennsylvania.
• Evaluation of Glare for Incandescent and LED Miner Cap Lamps in Mesopic Conditions
  6/1/2009 - Peer reviewed journal articles
  This paper discusses NIOSH mine illumination research to determine if light-emitting diode (LED) cap lamps can improve safety by reducing glare.
• Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
  3/1/2009 - Peer reviewed journal articles
  This study describes the development of an expert classification system used as a decision tool which can be used for degasification system selection using site- and mine-specific conditions.
• Performance Characteristics for Welded Wire Screen Used for Surface Control in Underground Coal Mines
  2/1/2009 - Conference papers
  The load-deformation characteristics and the load capacity of welded wire screen (roof screen) used to control ground fall were evaluated in the laboratory in a specially built test frame.
• Effect of Air Velocity on Conveyor Belt Fire Suppression Systems
  2/1/2009 - Conference papers
  Researchers evaluated four different types of fire suppression systems to study the effect of air velocity on extinguishing conveyor belt fires. Details are presented on the large-scale fire test set-up and arrangement of fire suppression systems.
• From Scotia to Brookwood, Fatal US Underground Coal Mine Explosions Ignited in Intake Air Courses
  1/1/2009 - Peer reviewed journal articles
  NIOSH researchers studied U.S. underground coal mine explosions over a 30-year period to identify the ignition sources and locations responsible for severe explosions resulting in death, and provided recommendations for safer electrical design.