Results 111 - 120 of 242

• 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.
• Mine Communications and Tracking Glossary
  9/17/2012 - Dictionaries and glossaries
  Mine Communications and Tracking Glossary
• Technology News 547 - Cost-Effective, Off-the-Shelf Wireless Links for Surface Integrated Mine Emergency Communications
  12/1/2011 - Technology News
  A surface network system using off-the-shelf components successfully established strategic communications links in a limited mine-simulated environment. The system could be expanded to link other communication devices and a command center.
• Nonverbal Communication for Mine Emergencies
  11/1/2011 - Reports of Investigations, Training materials
  Nonverbal Communication for Mine Emergencies is a training program that teaches miners a series of nonverbal hand signals to use in the event of an emergency. These hand signals can be used by miners if they are unable to communicate verbally.
• 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.
• Radio 101: Operating Two-Way Radios Every Day and in Emergencies
  8/1/2011 - Reports of Investigations, Training materials
  Radio 101 is a program to train miners in the use of two-way radio communication in the mines.