Results 111 - 120 of 265

• Sprinkler Head Emergency Communications
  10/6/2014 - Contracts and cooperative agreements
  A contract to evaluate a fiber optic sprinkler head emergency communications system to determine if this concept can meet the communication, tracking, mine escape, and rescue requirements of an underground communication system.
• Earth Conductivity Estimation from Through-the-Earth Measurements of 94 Coal Mines Using Different Electromagnetic Models
  10/1/2014 - Peer reviewed journal articles
  An analyis of TTE measurement data collected from 94 mines in order to determine the apparent conductivity of the overburden based on three different models: a homogenous half-space model, a thin sheet model, and an attenuation factor or Q-factor model.
• Supplementary Technologies for Advanced Mine Communication Networks
  9/25/2014 - Contracts and cooperative agreements
  A contract to develop a Universal Signal Evaluation Package for 75- and 150-MHz bands, adapt a passive magnetic amplifier for 900-MHz, and investigate energy harvesting technologies.
• Wireless Through-The-Earth Modeling and Support
  8/15/2014 - Contracts and cooperative agreements
  A contract to determine the factors that most affect signal transmission and reception for through-the-earth communication systems.
• Refuge Chamber Deployment and Occupancy Status During Mine Emergency Situations
  8/14/2014 - Contracts and cooperative agreements
  A contract to incorporate a wireless base station into the MagneLink Magnetic Communication System (MCS) and to develop a mechanism that automatically activates a portable wireless text messaging device when a refuge chamber is opened or deployed.
• Assessment of Whole-body Vibration Exposures and Influencing Factors for Quarry Haul Truck Drivers and Loader Operators
  7/1/2014 - Peer reviewed journal articles
  An article detailing a follow-up investigation to assess vibration exposure on haul trucks and front-end wheel loaders.
• Application of Fatigue Management Systems: Small Mines and Low Technology Solutions
  4/1/2014 - Peer reviewed journal articles
  An article that presents a case study of a small surface mining organization to highlight the fatigue risk management system implemented at the studied mine site.
• Post-Accident AMS System
  1/6/2014 - Contracts and cooperative agreements
  A contract to develop a robust, intrinsically safe system that will incorporate atmospheric monitoring, two-way communications and miner tracking, all in a single network.
• Emergency Communications and Tracking
  7/24/2013 - Research areas
  Emergency Communications and Tracking Topic Page
• Technology News 551 - Through-the-Earth, Post-Accident Communications - an Emerging Technology
  12/1/2012 - Technology News
  A technology to provide a two-way communications system to improve miners' ability to communicate from underground to surface.