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Investigation of the Failure of Roofs in Coal Mines.

Authors
Aughenbaugh-NB; Bruzewski-RF
Source
NTIS: PB/243-375 Available for Reference At Bureau Libraries :135 pages
Link
NIOSHTIC No.
10000915
Abstract
This report provides the results of studies concerning several environmental features suspected of altering the strength characteristics of shale in mine roof rock and discusses several methods of laboratory testing sample roof rock to determine whether or not it is prone to failure. Among the features examined affecting strength characteristics are humidity, temperature, and recrystallization of minerals in the shale. The results of several tests concerning these features are given.
Publication Date
19730101
Document Type
CP; Final Contract Report;
Fiscal Year
1973
NTIS Accession No.
PB-243375
NTIS Price
A08
Identifying No.
OFR 55-75
NIOSH Division
SRC;
Source Name
NTIS: PB/243-375 Available for Reference At Bureau Libraries
State
MO;
Performing Organization
University of Missouri-Rolla
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