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Evaluation of a Combined Face Ventilation System Used With a Remotely Operated Mining Machine.

Authors
Divers-EF; Jayaraman-NI; Custer-J
Source
MISSING :7 pages
Link
NIOSHTIC No.
10002513
Abstract
This Bureau of Mines report presents results of an underground evaluation to determine the respirable dust and gas control effectiveness of a combined (push-pull) face ventilation system for coal mines. The system utilizes both blowing and exhaust curtain, continuous miners equipped with radio remote control, and flight conveyors. Bureau of Mines tests showed a 97% reduction in respirable dust concentrations from the usual cab position on the continuous miner to the remote control operator's position. This allowed the remote control operator to be well within, and the usual cab position to exceed, federal respirable dust standards. Tests utilizing a safe tracer gas, sulfur hexafluoride (sf6), to determine the face ventilation effectiveness of the combined blowing and exhaust system showed that the system also has excellent methane dispersion capability. Where wide entries permit, this combined face ventilation system and use of remote control can be a very effective method for dust and gas control.
Publication Date
19820101
Document Type
IH; Information Circular;
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
IC 8899
NIOSH Division
PRC;
Source Name
MISSING
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