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The Effect of Atmospheric Pressures on the Oxygen Level in a Sealed Mine.

Authors
Moebs-NN; Chamberlain-CE
Source
NTIS: PB 208 008 :19 pages
Link
NIOSHTIC No.
10001811
Abstract
The atmosphere in part of an air-sealed coal mine was monitored continuously through a drill hole for oxygen content to determine (1) the effectiveness of sealing a mine against the entrance of air and (2) the major force that caused the phenomenon of mine breathing through the overburden. The differential pressure across the seal and the barometric pressure on the outside also were recorded. A general correlation, obtained between the oxygen level, differential pressure, and barometric pressure, indicates that changes in air pressure are the cause for periodic replenishment of the oxygen in the mine. Mine effluent quality was determined by conditions in many sections of the mine and could not be related to the oxygen level at the drill hole.
Publication Date
19720101
Document Type
IH; Report of Investigations
Fiscal Year
1972
NTIS Accession No.
PB-208008
NTIS Price
A03
Identifying No.
RI 7606
NIOSH Division
PRC;
Source Name
NTIS: PB 208 008
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