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Reducing worker exposure to dust generated during longwall mining.

Authors
Rider-JP; Colinet-JF
Source
Proceedings of the Seventh International Mine Ventilation Congress, June 17-22, 2001, Crakow, Poland. S Wasilewski, ed., Crakow, Poland: Research & Development Center for Electrical Engineering and Automation in Mining (EMAG), 2001 Jun; :275-282
Link
NIOSHTIC No.
20021421
Abstract
Average production from longwall mining operations in the United States has risen from approximately 800 tons per shift in 1980 to over 4,600 metric tons per shift in 1999. Such a large increase in production has the potential to generate significantly more dust. Previous NIOSH research has shown that, on average, respirable dust levels generated by the shearer accounts for 50% of the airborne dust generated during longwall mining. Ventilating air and water are primary controls being used in an effort to reduce longwall dust levels. Longwall operators are applying more air and water than ever before and have expressed concern over reaching maximum practical limits for these controls. Full-scale laboratory tests are being conducted to evaluate the impact on shearer-generated dust levels for changes in face air velocity, water quantity at the shearer, water spray pressure, spray system design, mining height and cutting direction. Results of this research should identify the most appropriate control levels for various operating conditions. In addition, general recommended dust control practices for longwall mining will be discussed.
Keywords
Mining-industry; Longwall-mining; Coal-mining; Coal-miners; Coal-dust; Mine-workers; Underground-mining; Underground-miners; Dust-exposure; Dust-inhalation; Dust-suppression; Dusts
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Publication Date
20010617
Document Type
Conference/Symposia Proceedings; Book or book chapter
Editors
Wasilewski-S
Fiscal Year
2001
NTIS Accession No.
NTIS Price
ISBN No.
8391310914
NIOSH Division
PRL
Source Name
Proceedings of the Seventh International Mine Ventilation Congress, June 17-22, 2001, Crakow, Poland
State
PA
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