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Underground loading devices in metal mines

Conditions in the feldspar industry

Published Year

• 1920-1929 (2) *

Subject

• Mining machinery (2) *
• Feldspar (1)
• Feldspar industry (1)
• Feldspar mines and mining (1)
• Mine safety--Equipment and supplies (1)
• Mining machinery--Safety measures (1)
• Mining machinery--Testing (1)

Author

• Colburn, C. Lorimer. (1)
• Ladoo, Raymond B. (1)

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