Technology News 472: Ventilation of a 40-Foot, Two-Pass, Extended Cut

Details

• Journal Article:
  National Institute for Occupational Safety and Health
• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  About one-half of all continuous mining faces in the United States are using extended cutting, i.e., advancing more than 20 ft past the last row of bolts. Most of these extended-cut approvals are for cutting depths of approximately 40 ft. Almost all of the continuous miners on these faces are equipped with machine mounted dust scrubbers and water spray systems for dust control. Little is known about ow much ventilation air reaches the box-cut face during various parts of the cutting sequence. This is of particular concern when a 40-ft, two-pass, extended cut is taken, because at the start of the 40-ft slab cut, the continuous miner is located 40 ft from the point of deepest penetration-the face of the 40-ft box cut. NIOSH, Pittsburgh Research Laboratory, undertook a study to evaluate this situation. [Description provided by NIOSH]
• Subjects:
  Air Pollution Air Pollution, Indoor Occupational Health Safety Ventilation
• Keywords:
  Scrubber-flows; Water-sprays; Methane-gas; Curtain-flow-rates; Ventilation-quality; Air-quality
• Source:
  Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, TN 472, 1998 May; :1-2
• Subseries:
  Technology News
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Periodical
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  2 pdf pages
• Issue:
  472
• NIOSHTIC Number:
  nn:20000574
• Email:
  ebt7@cdc.gov
• Federal Fiscal Year:
  1998
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d24de29432e50d3849aaa895a2a00c908a64fd7ea091f1b12ae64686c01ad052dac547bc4bed9dda840e4e7ad9de051841aa47b7b1ca0077ddfeffe270d0a258
• Download URL:
  https://stacks.cdc.gov/view/cdc/161013/cdc_161013_DS1.pdf
• File Type:
  [PDF - 57.14 KB ]