Results 31 - 36 of 36

• Two-Way, Through-the-Earth Emergency Communication System for Trapped Miners and the Surface
  9/18/2012 - Contracts and cooperative agreements
  A contract to design a prototype two-way, through-the-earth (TTE) emergency communication system, fabricate the hardware, and test the system at an underground coal mine.
• Performance and Safety Investigation of Emergency Backup Batteries and Battery Charging Systems for Underground Mining Applications
  9/18/2012 - Contracts and cooperative agreements
  A contract to address issues associated with battery selection, use, and charging for the underground coal mining environment, specifically with respect to MINER Act requirements for mine communications and personnel tracking technology.
• Ultra-Low Frequency Through-the-Earth Communication Technology
  9/18/2012 - Contracts and cooperative agreements
  A contract to analyze, adapt, and test an existing ultra-low frequency (ULF), through-the-earth system for communication and tracking of underground mine personnel.
• Through-The-Earth Wireless Real-Time Two-Way Voice Communications
  9/17/2012 - Contracts and cooperative agreements
  A contract to design, build, and demonstrate a battery-powered, through-the-earth wireless voice communication system for overburdens of up to 600 feet.
• Passive Fiber Optic System for Locating, Tracking, and Communicating with Personnel in Coal Mines
  9/17/2012 - Contracts and cooperative agreements
  A contract to develop and demonstrate a modified, fiber optic-based perimeter security system to track personnel in an underground coal mine.
• Wireless Mesh Mine Communication System
  9/17/2012 - Contracts and cooperative agreements
  A contract to design, adapt, construct, install, and evaluate a wireless mesh communication network in an underground coal mine.