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Controlling dust exposures in longwall mining utilizing a simple barrier.

Authors
Sweeney-DD; Slagley-JM; Smith-DA; Rider-JP
Source
Min Eng 2009 Dec; 61(12):58-61
NIOSHTIC No.
20036245
Abstract
The United States coal mining industry has traditionally experienced difficulty in controlling dust levels below the occupational exposure limit. While improvements in face ventilation and water spray nozzles have decreased dust exposures, approximately eight percent of experienced coal miners are still developing Coal Worker's Pneumoconiosis. This investigation tested the feasibility of enhancing existing engineering dust controls by mounting a simple barrier on a longwall shearer that separated the operators from the cutting drums. The barrier was constructed and tested above ground at the National Institute for Occupational Safety and Health Pittsburgh Research Laboratory longwall gallery test facility. A 96-percent reduction of respirable dust occurred at the headgate sampling position when tested at 2.4 m/sec (480 ft/min). The average dust level decreased from 39 mg/m3 to 1.5 mg/m3 by utilizing the barrier.
Keywords
Breathing; Breathing-zone; Coal-workers; Coal-workers-pneumoconiosis; Dust-control; Dust-control-equipment; Engineering-controls; Exposure-assessment; Exposure-levels; Mine-workers; Inhalation-studies; Longwall-mining; Occupational-exposure; Occupational-hazards; Pulmonary-system-disorders; Respiratory-irritants; Respiratory-protection; Respiratory-system-disorders; Ventilation; Ventilation-equipment; Ventilation-systems
CODEN
MIENAB
Publication Date
20091201
Document Type
Journal Article
Funding Type
Grant
Fiscal Year
2010
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008432
Issue of Publication
12
ISSN
0026-5187
NIOSH Division
PRL
Priority Area
Mining
Source Name
Mining Engineering
State
PA; OH
Performing Organization
University of Cincinnati
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