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Safety electric switches for mines

Permissible explosion-proof electric motors for mines :conditions and requirements for test and approval

Shot firing in coal mines by electricity controlled from outside

Suggested safety rules for installing and using electrical equipment in bituminous coal mines

Published Year

• 1910-1919 (4)

Subject

• Electricity in mining (4) *
• Coal mines and mining--Safety measures (1)
• Electric motors (1)
• Electric switchgear (1)

Author

• Clark, H. H. (4) *
• Means, Charles M. (2)
• Breth, N. V. (1)

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