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Dust considerations when using belt entry air to ventilate work areas.

Authors
Potts-JD; Jankowski-RA
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9426, 1992 Jan; :1-12
NIOSHTIC No.
10011449
Abstract
In this U.S. Bureau of Mines study, four underground respirable dust surveys were conducted to determine factors affecting belt entry dust levels and how using belt air to ventilate work areas affected dust exposures. Belt entry dust levels on the surveyed longwall and continuous miner sections averaged 0.59 and 0.26 Mg/m3, respectively. The stageloader-crusher contributed an additional 0.5 to 0.9 Mg/m3 of dust to belt air, while the feeder-breaker contributed 0 to 0.2 Mg/m3 of dust. A 1,000-ft increase in belt entry length or a 200- to 500-st-per-shift increase in production resulted in roughly a 0.1-Mg/m3 increase in dust. Using the belt entry as an intake entry on the continuous miner section appeared to reduce dust levels by 0.1 to 0.3 Mg/m3 during cutting. Belt air was not used to ventilate the face on the longwall section.
Keywords
Dust-measurement; Dust-sampling; Dust-control; Respirable-dust; Ventilation; Mining-industry; Ventilation-systems; Underground-mining; Longwall-mining
Publication Date
19920101
Document Type
IH; Report of Investigations
Fiscal Year
1992
NTIS Accession No.
PB2005-105967
NTIS Price
A03
Identifying No.
RI-9426
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9426
State
PA
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