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Characterization of visible dust plumes from surface coal mine highwall drills.

Authors
Cocalis-J
Source
American Industrial Hygiene Conference and Exposition, May 20-25, 2000, Orlando, Florida. Fairfax, VA: American Industrial Hygiene Association, 2000 May; :90
NIOSHTIC No.
20041664
Abstract
Situation: Surface coal mine highwall drill dust exposure has been liked to silicosis. Traditional gravimetric sampling, using cyclones, may not identify peak exposures that are believed to occur when visible dust plumes are present. Characterization of these exposure peaks is important from the standpoint of both health assessment and exposure control. Problems: Short-term high-intensity exposures to respirable crystalline silica have not been well quantified for surface coal mine drilling operations. Resolution: Surface coal mine drill dust plumes were concurrently videotaped and sampled using DataRams, personal impactors, and traditional samplers. The results indicate the presence of respirable dust in all plumes, with short-term peak concentrations of 100-400 mg/m3 typically lasting for up to 10 seconds. How will sharing this work experience benefit other industrial hygiene practitioners? These data can be used for better exposure control, including the design of cabs to withstand peak exposures.
Keywords
Mine-workers; Mining-industry; Miners; Coal-mining; Coal-miners; Surface-mining; Coal-dust; Highwall-mining; Mining-equipment; Silica-dusts; Silicosis; Gravimetric-analysis; Cyclone-air-samplers; Exposure-assessment; Respirable-dust; Dust-sampling; Dusts; Dust-exposure; Short-term-exposure; Dust-samplers; Dust-control; Control-equipment; Equipment-design
CAS No.
7631-86-9; 14808-60-7
Publication Date
20000520
Document Type
Abstract
Fiscal Year
2000
NTIS Accession No.
NTIS Price
NIOSH Division
DRDS
Source Name
American Industrial Hygiene Conference and Exposition, May 20-25, 2000, Orlando, Florida
State
WV; FL; VA
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