Sand and Gravel Excavation: Part 3: Hydraulic Dredge, Clamshell Dredge, Ladder Dredge, and Dipper Dredge
Description:
Report issued by the U.S. Bureau of Mines discussing different methods of sand and gravel excavation. These methods include hydraulic, clam-shell, ladder, and dipper dredging. This report includes tables, and illustrations.
Date:
March 1935
Creator:
Thoenen, J. R.
Item Type:
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Report
Partner:
UNT Libraries Government Documents Department