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Methane in California gold mines
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Published Year
1920-1929 (1)
Subject
Firedamp (1)
Gas bursts (1)
Gold mines and mining (1) *
Gold mines and mining--California (1)
Methane (1)
Mine gases (1)
Mine gases--Flammability (1)
Mine gases--Measurement (1)
Mine ventilation (1)
Author
Gardner, E. D. (1)
Pickard, Byron O., (1) *
