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State regulations governing the use of trolley wires in mines

Permissible mine equipment approved during the calendar years 1953-54

Permissible mine equipment approved by the Bureau of Mines during 1959-60 :with appended lists of manufacturers of flame-resistant trailing cables and fire-resistant conveyor belts and holders of permits

Published Year

• 1920-1929 (1)
• 1950-1959 (1)
• 1960-1969 (1)

Subject

• Coal mines and mining--Safety measures (1)
• Coal mines and mining--United States--Safety measures (1)
• Electricity in mining (1)
• Mine safety (1)
• Mine safety--United States--Equipment and supplies (1)
• Mining machinery (1)

Author

• Kearns, R. A. (3) *
• Brunot, H. B. (1)
• Ilsley, L. C. (1)
• Lee, F. R. (1)

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