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Development of sand and gravel deposits

Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Sand and gravel excavation.

Published Year

• 1930-1939 (6)

Subject

• Gravel (6) *
• Sand (6)
• Excavating machinery (4)
• Mine haulage (2)
• Mining engineering (1)
• Sand and gravel industry (1)

Author

• Thoenen, J. R. (6) *

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