Results 121 - 130 of 251

• Technology News 544 - New Measurement Tool to Validate Wireless Communications and Tracking Radio Signal Coverage in Mines
  10/1/2011 - Technology News
  This technology is used to map communications and tracking coverage in underground mines. It is important to know coverage of these systems during a mine emergency.
• Technology News 543 - Reverse Implementation of Radio Frequency Identification (RFID) Technology for Personnel Tracking in Underground Mines
  9/1/2011 - Technology News
  Possible benefits of the use of reverse RFID for personnel tracking are: improvements in accuracy, the ability to interface to a variety of mine communications infrastructures, better system survivability, and easier installation and maintenance.
• MultiFit4: An Improved System for Insert-Type
  9/1/2010 - Peer reviewed journal articles
  This paper describes the results of initial testing of the NIOSH Multifit4 system that was designed to be used as a tool by qualified researchers to evaluate hearing protector training and fit interventions at worksites.
• Acoustic Assessment of Pneumatic and Electric Jackleg Drills used in the Mining Industry
  4/1/2010 - Conference papers
  This paper presents an acoustic assessment of pneumatic and electric jackleg drills involving Noise Source Identification (NSID), penetration rate measurements, operator’s cumulative noise dose measurements, and determination of sound power levels.
• Straight Line Walking and Path-Turn Identifying Algorithms for a Tracking Device Used in Underground Mines
  1/1/2010 - Conference papers
  This paper describes two algorithms that can provide greater accuracy for underground miner tracking systems.
• Algorithms to Identify Its Own and Surrounding Tunnels for an Underground Tracking Device
  1/1/2010 - Conference papers
  This paper introduces algorithms to locate miners with no need for external reference sensors. There are definitions of useful mathematical operations that can be performed on the node coordinates and includes a description of the algorithms.
• 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.
• Field Evaluation of a Passive Diesel Particulate Filter at a Limestone Mine
  4/1/2009 - Peer reviewed journal articles
  In this study, the operators of a limestone mine retrofitted a loader used for clean-up operations with a passive DPF that was lightly catalyzed and used a fuel additive to initiate regeneration at low exhaust temperatures.
• Evaluation of Sequential Extraction Procedures for Soluble and Insoluble Hexavalent Chromium Compounds in Workplace Air Samples
  2/1/2009 - Peer reviewed journal articles
  The results of this study by NIOSH have served to provide performance data in support of the procedures described in the international standard methods, for which such results were previously unavailable in the peer-reviewed literature.
• Underground Coal Mining Disasters and Fatalities: United States, 1900-2006
  1/1/2009 - Historical information, Publications
  NIOSH researchers reviewed mining fatality surveillance data from the period 1900-2006, and using MSHA reports collected additional data on the deaths and circumstances associated with the Sago, Alma, and Darby incidents. They also reviewed published ma...