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Underground transportation of coal :Progress report 1

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

Published Year

• 1940-1949 (2) *

Subject

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

Author

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

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