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Underground transportation of coal :progress report [No.] 2

An analysis of the use of electricity at coal mines.

Published Year

• 1940-1949 (2)

Subject

• Coal mines and mining--Equipment and supplies (2)
• Coal-handling machinery (2) *
• Mine haulage (1)

Author

• Jones, Frank A. (2)
• Thomas, Edward. (2) *
• Toenges, Albert L. (2)
• Maize, Earl R. (1)

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