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Analysis of Noncoal Mine Atmospheres.

Authors
Rodgers-SJ
Source
NTIS: PB/266-764 Available for Reference At Bureau Libraries :121 pages
Link
NIOSHTIC No.
10000375
Abstract
The quantity and behavior of gases in metal and nonmetal mines were monitored to provide background information on feasibility of incipient fire detection systems. Monitoring was conducted during working and nonworking periods at intake air, return air, and working places. Gases generated during diesel operations and shot firing were of particular interest. Gases that were monitored were CO, co2, no, NO2, and so2. Submicrometer particulate concentrations were also monitored. Commercially available instruments were used and included nondispersive infrared, electrochemical, and chemiluminescent types. The ratios of the various gases generated during diesel operations and shot firing were similar to those expected from an incipient fire, except for the co2:nox ratio, which was sufficiently different to be considered for early fire warning. Samples taken near leaking bulkheads showed high co2 levels, and low CO levels, the reverse of anticipated behavior in coal mines.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-266764
NTIS Price
A07
Identifying No.
OFR 78-77
NIOSH Division
PRC;
Source Name
NTIS: PB/266-764 Available for Reference At Bureau Libraries
Performing Organization
Msa Research Corp.
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