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Applying atmospheric status equations to data collected from a sealed mine, postfire atmosphere.

Authors
Timko-RJ; Derick-RL
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9362, 1991 Jan; :1-23
Link
NIOSHTIC No.
10009156
Abstract
In early June 1986, an underground fire of unknown origin erupted in one of several entries of a coal mine located in southwestern Colorado. For a time, mine personnel aggressivley fought the fire. However, control of the fire was later lost. To prevent further damage and reduce the possibility of an explosion, all portals and shafts to the mine were sealed. The mine operator requested the U.S. Bureau of Mines' assistance in obtaining and analyzing mine fire gases taken from sampling ports placed through the mine seals, as well as down boreholes drilled after the fire. This report recounts activities within the first 2 years of the mine being sealed. It includes a description of gases analyzed and mine atmosphere status equations generated from the analyzed gases. The gases were analyzed by chromatography and included standard atmospheric gases as well as higher hydrocarbons that are found in postfire atmospheres. Nine equations were used to evaluate what was occurring within the sealed mine. Following a description of the rationale behind each equation, the 2-year trend is briefly analyzed.
Keywords
Oxygen; Nitrogen; Argon; Carbon-dioxide; Carbon-monoxide; Hydrogen; Alkanes; Alkene-hydrocarbons; Alkyne-hydrocarbons; Chemical-analysis; Mine-fires; Coal-mines; Combustion-products; Gas-analysis; Mathematical-models; Colorado
Publication Date
19910101
Document Type
IH; Report of Investigations
Fiscal Year
1991
NTIS Accession No.
PB91-230235
NTIS Price
A03
Identifying No.
RI-9362
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9362
State
CO; PA
Performing Organization
Cyprus Empire Coal Corporation, Craig, CO
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