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Methane in California gold mines
Precautions to be observed in entering abandoned exploratory shafts and pits
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Published Year
1920-1929 (2)
Subject
Firedamp (2) *
Methane (2)
Mine gases (2)
Abandoned coal mines (1)
Abandoned coal mines--Accidents (1)
Abandoned mines (1)
Abandoned mines--Risk assessment (1)
Blackdamp (1)
Gas bursts (1)
Gold mines and mining (1)
Gold mines and mining--California (1)
Mine gases--Flammability (1)
Mine gases--Measurement (1)
Mine gases--Safety measures (1)
Mine safety (1)
Mine shafts (1)
Mine shafts--Safety measures (1)
Mine ventilation (1)
Author
Pickard, Byron O., (2) *
Gardner, E. D. (1)
