Results 11 - 17 of 17

• Methods for Evaluating Explosion Resistant Ventilation Structures
  7/1/2005 - Conference papers
  Large-scale explosion tests conducted within the multiple-entry section of NIOSH's Lake Lynn Experimental Mine (LLEM) are currently the only accepted test method for deeming a seal design suitable for use in U.S. mines. These explosion tests are labor-i...
• The Use of Nitrogen-Enhanced Foam at the Pinnacle Mine Fire
  6/1/2005 - Conference papers
  This paper evaluates the effectiveness of remotely applied nitrogen-enhanced foam to aid in efforts to isolate and suppress a mine fire.
• Evaluation of Mine Seals Using Ground Penetrating Radar
  3/1/2005 - Conference papers
  NIOSH used ground-penetrating radar (GPR) technology to determine if each of three test mine seals were uniformly constructed. The results suggest that GPR could be used as a tool to evaluate mine seal characteristics and construction uniformity.
• Alternative Methodologies for Evaluating Explosion-resistant Mine Ventilation Seals
  10/1/2003 - Conference papers
  Discusses the evaluation of a seal evaluation method, based on a hydrostatic pressure loading concept, for in-situ testing of seals in an operating mine.
• Designs for Rapid In-Situ Sealing
  2/1/2003 - Conference papers
  Reports on NIOSH full-scale experiments to evaluate the explosion-resistant characteristics of several new seal designs for rapid deployment during mine emergencies.
• Use of Ground Penetrating Radar and Schmidt Hammer Tests to Determine the Structural Integrity of a Mine Seal
  2/1/2002 - Conference papers
  Over the years, more than 20,000 mine seals have been erected in underground coal mines in the United States. The National Institute for Occupational Safety and Health is conducting research to develop design guidelines, to investigate noninvasive tech...
• Evaluation of New Methods and Facilities to Test Explosion-Resistant Seals
  1/1/2001 - Conference papers
  This paper provides a brief overview of the ongoing study to evaluate the use of these chambers for pressure loading of full-scale seal designs using compressed air, water, or internal gas explosions.