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Technology News 439 - remote reset systems for continuous mining machines used in extended cuts.

Authors
USBM
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TN 439, 1994 Aug; :1-2
NIOSHTIC No.
10005462
Abstract
The popularity of extended cut mining is increasing in U.S. coal mines. With this mining method, remote-controlled continuous miners are used to drive entries in excess of 6.1 m (20 ft) inby permanently supported roof. Industry-wide attention is focusing on safety considerations in extended cut mining. A particular problem area is the interruption of power to the continuous miner during an extended cut. Mine workers are tempted to dart under unsupported roof, disregarding regulations and personal safety, to reset circuit breakers on the continuous miner. Information was solicited from various organizations to determine the circumstances that cause power interruptions to extended cut continuous miners. The data accumulated permitted several conclusions to be drawn about why high-voltage circuit breakers trip. From this information, designs for remote reset systems were developed.
Keywords
Mining-industry; Underground-mining; Coal-mining; Mining-equipment; Safety-practices; Safety-measures; Safety-programs; Safety-research
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Publication Date
19940801
Document Type
Technology News
Fiscal Year
1994
NTIS Accession No.
NTIS Price
Identifying No.
TN-439
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TN 439
State
PA
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