Results 51 - 60 of 150

• Deep Coal Longwall Panel Design for Strong Strata: The Influence of Software Choice on Results
  6/1/2009 - Information Circulars
  This paper examines four different stress analysis programs or tools for analyzing stress around a single longwall panel at 610 m (2,000 ft) depth beneath overburden containing some strong strata.
• Proceedings of the International Workshop on Numerical Modeling for Underground Mine Excavation Design
  6/1/2009 - Information Circulars
  NIOSH organized the International Workshop to improve understanding of the rock response obtained from modeling. The papers address various numerical modeling approaches, rock mass modeling, and applications in coal and metal mines.
• The Application of Major Hazard Risk Assessment (MHRA) to Eliminate Multiple Fatality Occurrences in the U.S. Minerals Industry
  10/1/2008 - Information Circulars
  This NIOSH pilot project demonstrated that most US mines have the capability to successfully implement an MHRA. The basic requirement for a successful MHRA is the desire to become more proactive in reducing risks associated with catastrophic events.
• Guidelines for Permitting, Construction, and Monitoring of Retention Bulkheads in Underground Coal Mines
  6/1/2008 - Information Circulars, Safety guidelines, tips, and checklists
  The guidelines in this report are to be used as a tool to identify areas or conditions that could impact the long-term stability of an underground fluid retention system and to give direction in addressing these situations.
• Explosion Hazards From Methane Emissions Related to Geologic Features in Coal Mines
  4/1/2008 - Information Circulars
  This report presents a historical framework detailing the impact of geologic features on excess gas emissions and resultant mine explosions.
• Miners' Views About Personal Dust Monitors
  2/1/2008 - Information Circulars
  This report summarizes a field study by NIOSH that documented the reactions of 30 miners at 4 underground coal mines concerning the use of personal dust monitors (PDMs) and how they make use of the information it provides.
• Multiple-Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
  5/1/2007 - Conference papers, Information Circulars
  A detailed evaluation of the multiple-seam experiences at Harris No. 1 Mine was done as part of NIOSH's nationwide multiple-seam mining case history database.
• Multiple-Seam Mining in the United States: Design Based on Case Histories
  5/1/2007 - Information Circulars
  The goal of this study is to help identify the location and likely severity of multiple-seam interactions. Mine planners can use this information to adjust the ground support, pillar design, or mine layout to minimize the hazard.
• Proceedings: New Technology for Ground Control in Multiple-seam Mining
  5/1/2007 - Information Circulars, NIOSH/USBM numbered publications
  Multiple-seam interactions are a major ground control hazard in many U.S. underground coal mines. NIOSH has been conducting research to develop better techniques for predicting the location and severity of multiple-seam interactions.
• Multiple-Seam Mining in the United States: Background
  5/1/2007 - Information Circulars
  For the past several years, NIOSH has been conducting research to develop better techniques for predicting the location and severity of multiple-seam interactions. This paper presents the background to that study.