Results 71 - 80 of 130

• Using Mine Planning and Other Techniques to Improve Ventilation in Large-Opening Mines
  2/1/2008 - Conference papers
  This paper describes NIOSH research demonstrating that the ventilation of large-opening mines improves significantly by including ventilation requirements in the mine planning process and implementing some practical techniques during mining.
• Strengthening Existing 20-psi Mine Ventilation Seals With Carbon Fiber-Reinforced Polymer Reinforcement
  1/1/2008 - Reports of Investigations
  This report discusses the testing and full-scale evaluations of a recently developed carbon fiber-reinforced polymer (CFRP) reinforcement technique for upgrading existing mine ventilation seals to withstand an explosion pressure of 50 psi or greater whi...
• Mine Face Ventilation: A Comparison of CFD Results Against Benchmark Experiments for the CFD Code Validation
  10/1/2007 - Peer reviewed journal articles
  To transfer CFD expertise to analyze and design a face-ventilation system, a comprehensive validation study of current CFD tools against mining-related benchmark experiments is required. This study was dedicated to the methane behavior in an empty (cont...
• Development of Coal Mine Face Ventilation Systems During the 20th Century
  8/1/2007 - Peer reviewed journal articles
  This article focuses on U.S. Bureau of Mines (USBM) and NIOSH research to examine factors that had a significant influence on mine face ventilation design during the past century.
• Using Ultrasonic Anemometers to Evaluate Face Ventilation Conditions
  2/1/2007 - Conference papers
  The fact that methane ignitions continue to occur at the mining face indicates that monitoring with machine-mounted methanometers does not always indicate the presence of high methane concentrations. Methane concentrations at the face change quickly du...
• Factors Affecting the Development of Mine Face Ventilation Systems in the 20th Century
  2/1/2007 - Conference papers
  During the 20th century, the increased emphasis on worker health and safety and the advent of new mining equipment and methods led to many changes in mine face ventilation practices.
• Lowering Respirable Dust at an Iron Ore Concentrator Plant Through Improved Ventilation Practices
  6/1/2006 - Conference papers
  A cooperative research effort was established to lower respirable dust levels in an iron ore grinding and concentrator plant. The most significant improvement was realized by changing the ventilation profile throughout the entire facility. Another succe...
• Novel Stopping Designs for Large-Opening Metal/Nonmetal Mines
  6/1/2006 - Conference papers
  The Super Stopping is designed as a long-term permanent stopping for use in the main entries of the mine, while the EZ-Up Curtain Stopping, although very durable, is designed more for portability and ease of installation. This paper describes the design...
• Development of New Protocols to Evaluate the Transverse Loading of Mine Ventilation Stoppings
  6/1/2006 - Conference papers
  A new protocol based on rigid arch loading of the structure is proposed to determine the true transverse load capacity of block stoppings. Tests show that load capability depends on the block's physical properties and the wall's geometric properties.
• Methane Control at Continuous Miner Sections
  6/1/2006 - Book chapters, Information Circulars
  This chapter gives guidelines for preventing methane gas explosions at continuous miner sections in coal mines, both at continuous miners and at roof bolters. The need to control peak methane emissions is particularly stressed. Emphasis is also placed...