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Impact of air velocity and support advance on shield-generated dust.

Authors
Chekan-GJ; Rider-JP; Listak-JM; Colinet-JF; Potts-JD
Source
Min Eng 2010 Apr; 62(4):57-63
NIOSHTIC No.
20036796
Abstract
Steady increases in longwall production have required operators to apply greater quantities of ventilating air in an effort to control and dilute respirable dust. Significant increases in shearer speeds necessitate that longwall supports also be advanced at a faster rate. Both of these factors may contribute to overall respirable dust levels on the longwall face because as supports are lowered and advanced, broken material falling from the top of the canopy is entrained directly into the air stream. To address this issue, the Pittsburgh Research Laboratory collected respirable dust samples from four longwall faces to characterize shield-generated dust. This paper investigates the influence of air velocity and shield advance rates on respirable dust levels. Also discussed are engineering controls currently used to reduce shield dust and alternative controls being investigated by the National Institute for Occupational Safety and Health (NIOSH).
Keywords
Control-technology; Dust-control; Dust-control-equipment; Dusts; Engineering-controls; Longwall-mining; Mining-equipment; Mining-industry; Particulate-dust; Pulmonary-system; Respirable-dust; Respiratory-irritants; Underground-mining; Ventilation; Ventilation-systems
CODEN
MIENAB
Publication Date
20100401
Document Type
Journal Article
Fiscal Year
2010
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0026-5187
NIOSH Division
OMSHR
Priority Area
Mining
Source Name
Mining Engineering
State
PA
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