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Evaluate Fundamental Approaches to Longwall Dust Control. Subprogram G--reduction of Shield-generated Dust.

Authors
Mangolds-A; Rajan-SR; Ruggieri-SK
Source
NTIS: De 90-015496 :50 pages
Link
NIOSHTIC No.
10008535
Abstract
As longwall shield supports have become more popular and shearer- generated dust has been reduced, many mines have noticed that support movement can be a significant respirable dust contributor. The objective of this program was to isolate and document the mechanics of support dust generation and mobilization and to devise appropriate control techniques. This was accomplished through a literature review, laboratory testing, and underground surveys. The literature review studied past research related to support dust generation and existing control measures. Laboratory testing investigated a variety of ventilation factors such as canopy cross flow, eddy effects, and the effectiveness of canopy sprays. Airflow over and around advancing shields was shown to be a significant factor in dust dispersion, and spray systems indicated promise for control. The underground surveys provided additional insight into the patterns of shield dust generation and dispersion, and confirmed that shield dust can be a significant fraction of workers' dust exposures.
Publication Date
19900101
Document Type
CP; Final Contract Report;
Fiscal Year
1990
NTIS Accession No.
PB90-015496
NTIS Price
A04
Identifying No.
OFR 31G-90
NIOSH Division
PRC;
Source Name
NTIS: De 90-015496
State
DE;
Performing Organization
Foster-Miller, Inc.
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