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Identify and Evaluate Lightweight Support Substitutes.

Authors
Forst-GL
Source
NTIS: PB/80-190580 :63 pages
Link
NIOSHTIC No.
10001019
Abstract
The objective of this program was to identify and evaluate superior, lightweight substitutes for selected coal mine roof support concepts such as crossbars, posts, and crib blocks. Engineering analysis and concept design identified, through tradeoff studies, that some materials are promising from a technical standpoint, as support substitutes such as e-glass reinforced polyester resin, high- strength low-alloy steel, aluminum, and very high early strength (vhe) cement. An economic analysis indicates that none of the lightweight substitutes are economically competitive with wood on an initial cost basis; however, in terms of life cycle costs based on current dollars, the high-strength, low-alloy steel appears competitive for crossbars, and the vhe cement and e-glass-resin appear competitive for posts.
Publication Date
19780101
Document Type
CP; Final Contract Report;
Fiscal Year
1978
NTIS Accession No.
PB80-190580
NTIS Price
A05
Identifying No.
OFR 67-80
NIOSH Division
SRC;
Source Name
NTIS: PB/80-190580
Performing Organization
FMC Corporation
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