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Factors affecting respirable dust generation from longwall roof supports.
Organiscak-JA; Listak-JM; Jankowski-RA
USBM 1985 Jan; :1-19
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.
Respirable-dust; Mining-industry; Dust-measurement; Dusts; Dust-sampling; Coal-dust; Dust-control; Mining-equipment
IH; Information Circular
NTIS Accession No.
U.S. Bureau of Mines
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division