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Effect of atmospheric moisture on the deterioration of coal mine roof shales.

Authors
Cummings-RA; Singh-MM; Moebs-NN
Source
Min Eng 1983 Mar; 35(3):243-245
NIOSHTIC No.
10003918
Abstract
Disintegration of the immediate shale roof in coal mines interferes with ventilation, production, and safety. The effect is seasonal and correlates with high levels of moisture in the intake ventilation air. Disintegration, although not completely understood, is caused by shale dilation and weakening upon exposure to atmospheric moisture. Fluctuating moisture conditions are particularly deleterious, but may be at least partially controlled by tempering the air before it is brought to the working place. This paper discusses a 2-year program that was conducted on behalf of the Bureau of Mines to study the deterioration problem in mines.
Keywords
Mining-industry; Rock-mechanics; Rock-falls; Underground-mining; Coal-mining; Ventilation-systems; Humidity; Relative-humidity
CODEN
MIENAB
Publication Date
19830301
Document Type
OP; Journal Article
Fiscal Year
1983
NTIS Accession No.
NTIS Price
Identifying No.
OP 57-84
Issue of Publication
3
ISSN
0026-5187
NIOSH Division
PRC
Source Name
Mining Engineering
State
PA
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