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Suggested hoisting-signal code for metal-mine shafts

Suggested hoisting-signal code for slope coal mines and for shaft mines having only one level

Published Year

• 1940-1949 (2) *

Subject

• Hoisting machinery (2) *
• Mine hoisting--Safety appliances (2)
• Mineral industries--Safety measures (2)
• Coal mines and mining--Safety measures (1)

Author

• East, J. H. (2)
• Harrington, D. (2)

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