Methane accumulations from interrupted ventilation
Subtitle: with special reference to coal mines in Illinois and Indiana
Contributors: Hamon, Robert J., joint author.; Illinois State Geological Survey.; Illinois. University. Engineering Experiment Station.
Publisher: Govt. print. off.
Published: 1918
Place of publication: Washington
Language: eng
Number of pages: 46
Subjects: Methane.; Mine gases.; Mine ventilation.; Coal mines and mining -- Safety measures.