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Evaluate Fundamental Approaches to Longwall Dust Control. Subprogram F--reversed Drum Rotation.

Authors
Ludlow-JE; Kelly-J; Ruggieri-SK
Source
NTIS: De 90-015502 :48 pages
Link
NIOSHTIC No.
10008534
Abstract
In longwall mining, a significant portion of the shearer operator's dust exposure is caused by dust generated during loading. With the conventional direction of shearer drum rotation, loading efficiency is usually poor due to obstructions caused by the ranging arms and the cowl support arms. By reversing the normal direction of rotation, however, the arms no longer provide an obstruction. This results in improved loading efficiency and reduced dust generation. This report describes the reversed-drum rotation concept and presents the results of a field survey and underground evaluation conducted to prove its feasibility and to measure its dust control benefits. Through this effort, the technique was shown to be feasible from both a mining and a mechanical standpoint. During the underground test, it reduced dust levels near the shearer operator's positions by about 85 pct.
Publication Date
19900101
Document Type
CP; Final Contract Report;
Fiscal Year
1990
NTIS Accession No.
PB90-015502
NTIS Price
A04
Identifying No.
OFR 31F-90
NIOSH Division
PRC;
Source Name
NTIS: De 90-015502
State
DE;
Performing Organization
Foster-Miller, Inc.
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