Results 61 - 70 of 83

• Experimental and Modeling Investigation of the Effect of Ventilation on Smoke Rollback in a Mine Entry
  2/1/2005 - Conference papers
  Diesel fuel fire experiments were conducted to determine the critical air velocity for preventing smoke rollback. Experimental results compared very well with model predictions based upon a computational fluid dynamics (CFD) fire dynamics simulator.
• Ventilation Planning Layouts for Large Opening Mines
  2/1/2004 - Conference papers
  Describes three alternative ventilation models for use in large opening underground mines with respect to their use in mines of various levels of development.
• Practical Techniques to Improve the Air Quality in Underground Stone Mines
  10/1/2002 - Conference papers
  Overview of a variety of techniques and methods that can be used to improve the air quality in underground stone mines.
• NIOSH Ventilation Research Addressing Diesel Emissions and Other Air Quality Issues in Nonmetal Mines
  2/1/2002 - Conference papers
  Discusses current NIOSH research to improve mine ventilation and mine air quality, particularly for large opening mines.
• Ventilating the Box Cut of a Two-Pass 40-ft Extended Cut
  7/1/1999 - Peer reviewed journal articles
  Describes a NIOSH study of how much ventilation air reaches the end of a 40 foot box cut. Tests were run to determine how much ventilation air reaches the end of the box cut with the continuous miner at three locations in the 40-ft two-pass extended cut...
• Investigation of Longwall Face Ventilation Air-Splitting Methods for Improved Dust Control
  3/1/1999 - Conference papers
  Two types of airflow splitting methods for improving longwall dust control were investigated by NIOSH's Pittsburgh Research Laboratory. These methods included a transducer mesh barrier and a staged spray barrier system.
• Technology News 472 - Ventilation of a 40-Foot, Two-Pass, Extended Cut
  5/1/1998 - Technology News
  This Tech News reports on the evaluation of the air quantity reaching the face of a 40 foot box cut during a two-pass extended cut sequence.
• Impact of Unbalanced Intake and Scrubber Flows on Face Methane Concentrations
  2/1/1997 - Conference papers
  Research was conducted to investigate how ventilation of a mining face is affected when scrubber flow is greater or less than intake flow.
• Technology News 437 - Total Mill Ventilation System for Mineral Processing Facilities
  5/1/1994 - Technology News
  This Tech News reports on the successful application of total mill ventilation systems to reduce respirable dust concentrations and comply with federal regulations regarding respirable dust
• Dust Considerations When Using Belt Entry Air to Ventilate Work Areas
  1/1/1992 - Reports of Investigations
  Dust surveys were conducted to determine factors affecting belt entry dust levels and how using belt air to ventilate work areas affected dust exposures.