Methane accumulations from interrupted ventilation : with special reference to coal mines in Illinois and Indiana / by Howard I. Smith and Robert J. Hamon.
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Main Authors: | , |
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Corporate Authors: | , , |
Format: | Government Document Book |
Language: | English |
Published: |
Washington, D.C. :
U.S. Bureau of Mines,
1918.
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Series: | Technical paper (United States. Bureau of Mines) ;
190. |
Subjects: |