Results 51 - 60 of 201

• Horizontal Stress
  9/22/2015 - Research areas
  Horizontal Stress Topic Page
• Enhancing Mine Workers' Self-escape by Integrating Competency Assessment into Training
  6/1/2015 - Reports of Investigations
  NIOSH researchers completed in-depth interviews with nine coal mine safety trainers about teaching and assessing Self-escape competencies (SEC). Based on the results recommendations are provided to improve training, assessment, and maintenance of SEC.
• Facilitating the Use of Built-in-place Refuge Alternatives in Mines
  4/1/2015 - Reports of Investigations
  An RI that explores 3 issues to facilitate use of BIP RAs: (1) locating BIP RAs further from the face; (2) providing a consistent process for the design and approval of RA stoppings; (3) delivering a reliable supply of clean, breathable air to a BIP RA.
• 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.
• Rib Falls: A Major Ground Control Issue
  9/28/2012 - News articles
  NIOSH's OMSHR is starting a new project to produce guidance and tools to improve management of rib fall hazards.
• 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.
• Technical Solutions for Enhancements to Mine Safety Using Barricade II Fire Blocking Gel
  9/17/2012 - Contracts and cooperative agreements
  A contract to evaluate the use of Barricade II Fire Blocking Gel for use in mine fire prevention, control, or fire suppression technologies.
• Improving stopping construction to minimise leakage
  7/1/2012 - Peer reviewed journal articles
  The research presented in this paper investigates the total leakage of a stopping, including air leakage through the stopping, at the stopping perimeter, and through the coalbed.
• 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.