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Some hazards of conveyor loading in coal mines

Aerial tramways in the metal-mining industry.

Published Year

• 1930-1939 (2) *

Subject

• Conveying machinery (2) *
• Aerial tramways (1)
• Coal-mining machinery (1)
• Mining machinery (1)

Author

• Jeffers, C. W. (1)
• Metzger, O. H. (1)

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