Results 101 - 110 of 258

• Radio System Modifications for Improved Mine Safety (Medium Frequency)
  11/19/2014 - Contracts and cooperative agreements
  A contract to increase the performance of medium frequency communications in underground mines.
• Education and Training
  10/7/2014 - Research areas
  Education and Training Topic Page
• Through-the-Earth Communication Systems for Underground Coal Mines: Product Final Development and Standardized Interface Definition
  10/6/2014 - Contracts and cooperative agreements
  A contract to extend the operational range of a through-the-earth communications system while maintaining the portability and permissibility of the subsurface unit.
• 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.
• Here Comes The Helmet-CAM: A Recent Advance In Technology Can Improve How Mine Operators Investigate and Assess Respirable Dust.
  10/1/2014 - Non-peer reviewed journal articles
  An article describing the latest advancements in technology to improve how mine operators can investigate and assess the respirable dust exposure of their workers.
• 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.
• Rapid Response Rescue Drilling System Development for Mine Rescue Application
  8/15/2014 - Contracts and cooperative agreements
  A contract to identify equipment needs, available contractors, and the development and demonstration process for a rapid response drilling system for mine rescue operations.
• 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.