Results 101 - 110 of 130

• 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.
• Effects of Water Sprays and Scrubber Exhaust on Face Methane Concentrations
  6/1/2001 - Conference papers
  Research to determine how machine-mounted water sprays and a scrubber interact to reduce methane levels and what spray configurations provide the best face ventilation when used with a scrubber.
• Implications of Recent NIOSH Tracer Gas Studies on Bleeder and Gob Gas Ventilation Design
  2/1/2000 - Conference papers
  A paper describing research at a Pittsburgh Coalbed longwall mine to evaluate and optimize bleeder ventilation and gob gas venthole longwall methane control systems.
• 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 448 - Improving the Performance of Longwall Gob Gas Ventholes
  3/1/1995 - Technology News
  The absence of fundamental scientific and engineering principles in the design and placement of gob gas ventholes can cause difficulties for mine operators when gas emissions increase because of a change in mine design or because variable geologic condi...
• 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
• Extended Cut Face Ventilation for Remotely Controlled and Automated Mining Systems
  2/1/1992 - Conference papers
  U.S. Bureau of Mines research is studying ways to more effectively ventilate extended cuts. Two face ventilation techniques that utilize either blowing brattice or a jet fan for deep cutting are examined in this paper.