Longwall Dust Sources and Controls: A Case Study

Details

• Personal Author:
  Colinet, Jay F. ; Jayaraman, Natesa I. ; Marston WT ; Mcnider TE
• Description:
  The Bureau of Mines (BOM) and Jim Walter Resources (JWR) entered into an agreement to evaluate BOM dust control research at Jim Walter's #7 Mine. The initial step in this agreement called for the BOM to conduct dust source surveys on the #1 and #2 longwall sections at #7 Mine to identify the relative contribution of the various dust sources and determine the effectiveness of the control parameters in use. The source surveys would indicate which areas should be addressed and would be used to focus future research. Instantaneous and gravimetric dust samplers were used with mobile and fixed-point sampling strategies to isolate different dust sources and determine the relative contribution from each source. In addition, water flow measurements, air flow measurements, run-of-mine coal samples, cutting procedures, and time study information were collected to supplement analysis of the dust data. A description of these sampling procedures is presented and offers insight into methodologies which can be used to isolate dust sources. The dust source evaluation indicated that dust generation on these longwall faces was well controlled and that no individual source contributed a disproportionate amount of dust. Typically, dust generation from the shearer is the most significant source of dust on the longwall faces and can overshadow the dust contributions from other sources. However, on each of the longwalls at #7 mine, the stageloader and shield movement contributions were nearly equal to dust generation from the shearer. The equality of these sources results from the low dust levels observed for the shearer and not because the stageloader and shield movement sources were unusually high. Intake dust levels from the main intake and belt entry were found to be low also. [Description provided by NIOSH]
• Subjects:
  Coal Dust Mining Occupational Health Safety
• Keywords:
  Airflow Dust Control Dusts Dust Samplers Gravimetry Ground Control Longwall Mining Mining Industry Samplers Sampling Underground Mines Underground Mining

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• Series:
  Mining Publications
• Publisher:
  Maclean Hunter Presentations, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Alabama ; OSHA Region 3 ; OSHA Region 4 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  185-206
• NIOSHTIC Number:
  nn:20048707
• Citation:
  Longwall USA International Exhibition and Conference, June 8-10, 1993, Pittsburgh, Pennsylvania. Aurora, CO: Maclean Hunter Presentations, Inc., 1993 Jun; :185-206
• Federal Fiscal Year:
  1993
• Peer Reviewed:
  False
• Source Full Name:
  Longwall USA International Exhibition and Conference, June 8-10, 1993, Pittsburgh, Pennsylvania
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:899932f22281455e1a3343fc06976151daa5ef95b6482b4055c2e428882adfafedad1cf4e88452659476ff8fb78b93946bc34fe449e380a2b90050577b56241b
• Download URL:
  https://stacks.cdc.gov/view/cdc/228295/cdc_228295_DS1.pdf
• File Type:
  [PDF - 378.16 KB ]