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Approval system of the Bureau of Mines, as applied to permissible storage-battery locomotives :(fourth complete investigation under schedule 15)

Approval system of the Bureau of Mines as applied to permissible storage-battery locomotives :third complete investigation under schedule 15

Published Year

• 1920-1929 (2)

Subject

• Electric locomotives (2)
• Mine safety (2)
• Storage batteries (2) *

Author

• Brunot, H. B., (2)
• Ilsley, L. C. (2) *

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