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Factors affecting respirable dust generation from longwall roof supports.

Authors
Organiscak-JA; Listak-JM; Jankowski-RA
Source
USBM 1985 Jan; :1-19
Link
NIOSHTIC No.
10004462
Abstract
The Bureau of Mines conducted a survey of eight shearer longwall operations to identify factors that affect respirable dust generation from longwall roof supports. The longwalls surveyed were in coal seams located in different geographic regions of the United States. Data were collected on mining (geologic) conditons, support design, operational characteristics, and amount of respirable dust generated from roof supports. Analysis indicated that mining conditions are the main factors that affect the generation of dust during roof support movement. Both roof strength and depth of cover above the coal seam showed relationships with the amount of support dust generated. Several practices are currently employed to effectively control roof support dust; however, some of these controls are limited. More research and development is needed to improve dust control technology for longwall roof supports.
Keywords
Respirable-dust; Mining-industry; Dust-measurement; Dusts; Dust-sampling; Coal-dust; Dust-control; Mining-equipment
Publication Date
19850101
Document Type
IH; Information Circular
Fiscal Year
1985
NTIS Accession No.
PB85-236453
NTIS Price
A03
Identifying No.
IC-9019
NIOSH Division
PRC
Source Name
U.S. Bureau of Mines
State
PA
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