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Evaluation of a Machine-mounted Dust Collector.

Authors
Tomb-TF; Martonik-JF; Taylor-CD
Source
NTIS: PB 222 590 :15 pages
Link
NIOSHTIC No.
10000106
Abstract
This paper describes field and laboratory investigations conducted on a dust-collection system recently designed for integral use with a continuous mining machine. The results of the field study showed that the average respirable dust concentration measured at the machine operator's position was reduced by about 60 percent (from 8.7 to 3.5 Milligrams per cubic meter), and total and respirable dust concentrations in the return air were reduced by approximately 70 percent. The data indicated that approximately 20 percent of the dust generated at the face was not passed through the scrubber. The laboratory results showed that the overall efficiency (by particle count) was approximately 80 percent for total dust concentrations (minus 20 micrometers in size) typical of those encountered underground. Calculations based on total dust concentrations measured during the underground study indicated that the respirable mass concentrations of the effluent from the scrubber would still exceed acceptable levels even if scrubbing of all the air at the face were possible.
Publication Date
19730101
Document Type
IH; Report of Investigations
Fiscal Year
1973
NTIS Accession No.
PB-222590
NTIS Price
A03
Identifying No.
RI-7788
NIOSH Division
PRC;
Source Name
NTIS: PB 222 590
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