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Aerial tramways in the metal-mining industry.

Aerial tramways in the metal-mining industry :construction and operating costs

Published Year

• 1930-1939 (1)
• 1940-1949 (1)

Subject

• Aerial tramways (2) *
• Mining machinery (2) *
• Conveying machiner (1)
• Conveying machinery (1)

Author

• Metzger, O. H. (2)

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