Results 171 - 180 of 220

• A Comparative Evaluation of the Differential-Pressure-Based Respirable Dust Dosimeter with the Personal Gravimetric Respirable Dust Sampler in Underground Coal Mines
  1/1/2001 - Conference papers
  This paper presents the results of a side-by-side comparison of the respirable dust dosimeter and gravimetric respirable dust sampler in a controlled experimental environent in the laboratory and in underground coal mines under normal operating conditions.
• Acceleration and GPS Data Monitor Truck-Haulage Jolts
  8/1/2000 - Peer reviewed journal articles
  This paper discusses the application of global positioning system (GPS) data, accelerometers, and pressure transducers to provide feedback about equipment operations and identify the cause of truck jolts.
• Mine Fire Source Discrimination Using Fire Sensors and Neural Network Analysis
  4/1/2000 - Conference papers
  Report on the application of a neural-network program using mine sensor data to classify the type of fire.
• Determination of Physical Properties of Cable Bolts in Cement Grout Pull Tests Using Instrumented King Wires
  4/1/2000 - Conference papers
  Researchers are investigating the physical properties of cable bolts by replacing the conventional king wire with a modified king wire on which strain gauges have been installed.
• Laboratory Evaluation of Pressure Differential-based Respirable Dust Detector Tube
  1/1/2000 - Peer reviewed journal articles
  Assessment of exposure to occupational dusts is a first step in reducing exposures to harmful dust concentrations. A new type of respirable dust sampler was developed and compared side-by-side to personal gravimetric samplers in the laboratory.
• A Passive Means to Detect Hot Trolley Insulators
  1/1/2000 - Peer reviewed journal articles
  NIOSH has devised a passive means to detect overheating insulators on direct current systems.
• Mine Fire Detection in the Presence of Diesel Emissions
  10/1/1999 - Conference papers
  A series of four coal combustion experiments was conducted at the National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory in the Safety Research Coal Mine to evaluate the response of optical and ionization smoke and CO sens...
• Mine Fire Detection in the Presence of Diesel Emissions
  6/1/1999 - Conference papers
  A report on a series of four coal combustion experiments conducted at the NIOSH (PRL) Safety Research Coal Mine (SRCM) to evaluate the response of fire sensors to a small 0.61 m square smoldering coal fire which transitions to flaming combustion in the ...
• Use of Strain-Gauged Rock Bolts to Measure Rock Mass Strain During Drift Development
  6/1/1999 - Conference papers
  An experiment is described in which instrumented rock bolts were used to measure strain in the rock mass during drift development at the Stillwater Mine, Nye, Montana, USA.
• Tying Acceleration and GPS Location Information Together To Create a Mine Management Tool
  3/1/1999 - Conference papers
  Accelerometers and pressure transducers mounted in suspension components can be used to monitor the ride of haulage trucks. When information from a Global Positioning System is recorded at the same time as shock pressures or acceleration date, then the...