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Evolution of methane detecting devices for coal mines

Lighting practices in coal mines of the United States

Published Year

• 1930-1939 (2) *

Subject

• Coal mines and mining--Safety measures (2) *
• Methane (1)
• Mine lighting (1)
• Mine lighting--Equipment and supplies (1)

Author

• Hooker, A. B. (2) *
• Ilsley, L. C. (1)
• Owings, C. W. (1)

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