Results 1 - 10 of 76

• Long-Term Stability of a Backfilled Room-and-Pillar Test section at the Buick Mine, Missouri, USA
  10/1/2009 - Peer reviewed journal articles
  Instruments remaining in a test section of a lead/zinc/copper room and pillar mine where pillar mining had taken place 14 years before were read to monitor long-term stability and quantify time dependent behavior in the mine roof and backfill.
• Seismic Network Operations at a Deep Underground Coal Mining District in Western Colorado (USA)
  8/1/2009 - Conference papers
  This paper describes network installation and methods used to collect, process, and distribute seismicity information collected on the surface above two longwall coal mines in western Colorado, and gives several examples of the collected data.
• The Status of Mine Fire Research in the United States
  9/1/2008 - Conference papers
  This paper summarizes recent accomplishments in a research program that is addressing mine fire prevention, detection, management, and suppression, and provides an overview of the next phase of the NIOSH mine fire research program.
• Monitoring Coal Mine Seismicity with an Automated Wireless Digital Strong-Motion Network
  7/1/2008 - Conference papers
  This paper describes a seismic network installed in western Colorado in the vicinity of three underground coal mines, its features for user access to data, and then gives two examples of seismic events resulting in some damage to mine workings.
• Case History of the Response of a Longwall Entry Subjected to Concentrated Horizontal Stress
  2/1/2007 - Peer reviewed journal articles
  A study of ground behavior, reinforcement performance and stress redistribution looked at a longwall tailgate under severe horizontal stress. Comparison to field results showed that a FLAC-2D model captured the significant roof and support behavior.
• Geophysical Methods to Detect Stress in Underground Mines
  3/1/2004 - Reports of Investigations
  Highly stressed rock in stopes continues to be a primary safety risk for miners in underground mines because this condition can result in failures of ground that lead to both injuries and death.
• Performance of Roof Support Under High Stress in a U.S. Coal Mine
  2/1/2004 - Conference papers
  The primary goal of this project was to obtain detailed data on the interaction between the mine roof and the support elements for use in modeling studies. 
• Three Dimensional Microseismic Monitoring of a Utah Longwall
  7/1/2001 - Conference papers
  In Utah, 3-D, full waveform, autonomous microseismic arrays were placed underground and on the surface of a longwall coal mine with overburden exceeding 750 m. Overall 13,000 seismic events, including a magnitude 4.2 event, were detected and located.
• MIS Analysis and DINSAR Measurements – Tools for Improving Mine Ground Control Safety
  9/18/2020 - Contracts and cooperative agreements
  A capacity-building contract with the University of Utah to improve seismic coverage, instrument a yield pillar, develop an extended numerical model, and evaluate statistical methods.
• NIOSH at 2016 Underground Stone Seminar
  10/27/2016 - News articles
  See NIOSH at the 2016 Underground Stone Seminar in Louisville, KY, on December 6-7.