Excavating machinery used for digging ditches and and building levees
By: J.O. Wright
Contributors: United States. Office of Experiment Stations; United States. Department of Agriculture
Series: Circular / U.S. Dept. of Agriculture, Office of Experiment Stations -- 74; Circular (United States. Office of Experiment Stations) -- 74
Publisher: U.S. Dept. of Agriculture, Office of Experiment Stations
Published: 1907
Place of publication: Washington, D.C
Language: eng
Number of pages: 40
Subjects: Excavating machinery; Levees; Design and construction; Dredging; Excavateurs; Dragage
Notes: Cover title.

"Issued August 31, 1907."

Experiment Station Circular No. 74.

At head of title: United States Department of Agriculture, Office of Experiment Stations.
Table of contents: title: Introduction; title: Kinds of ditches to be constructed. pp. 5; title: Classes of dredges. pp. 6; title: Dipper dredges. pp. 7; title: Drag boats. 17; title: Clamshell dredges. pp 18; title: Rotary dredges; title: Rollaer dredges. pp. 22; title: Kinds of buckets. pp. 23; title: Scraper dredges. pp. 24; title: Elevator dredges. pp. 27; title: Hydraulic dredges. pp. 28; title: DItching with a dredge. pp. 29; title: Machines for levee building. pp. 35; title: Machine for tile ditching. pp. 38; title: Conclusions. pp. 40.