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Engineering methods for the design and employment of wood cribs.

Authors
Barczak-TM; Gearhart-DF
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9361, 1993 Jan; :1-34
Link
NIOSHTIC No.
10012174
Abstract
Wood cribs are used extensively by the mining industry to stabilize mine openings. While the cost per crib is relatively low, the extensive use can result in annual mine costs of over 1 million dollars. In an effort to improve the utilization of these supports and to reduce ground control hazards, the U.S. Bureau of Mines has developed engineering methods to assist mine operators in wood crib design and employment. Design and employment criteria are established based on the strength, stiffness, and stability of the crib structure in relation to the load conditions imposed by the mine environment.
Keywords
Mining-industry; Underground-mining; Mining-equipment; Engineering-controls; Control-technology; Longwall-mining; Ground-control; Computer-models; Mathematical-models
Publication Date
19930101
Document Type
Information Circular
Fiscal Year
1993
NTIS Accession No.
PB94-113552
NTIS Price
A03
Identifying No.
IC-9361
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9361
State
PA
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