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Technology and Uses of Silica and Sand

Sand and Gravel Excavation: Part 3: Hydraulic Dredge, Clamshell Dredge, Ladder Dredge, and Dipper Dredge

Published Year

• 1920-1929 (1)
• 1930-1939 (1)

Subject

• Sand. (2) *
• Dredges. (1)
• Excavating machinery. (1)
• Gravel. (1)
• Silica. (1)

Author

• Thoenen, J. R. (1)
• Weigel, W. M. (1)

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