710Be0205: "Rolling Oasis clay lining in Delta-Melville Canal, Utah, with a cylindrical roller filled with water to increase compaction"

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http://hdl.handle.net/10217/179218
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Abstract
Roller powered by a Power Horse tractor. This negative is of a Utah Agricultural Experiment Station photograph. Title information from "Canal Lining Manual," by Carl Rohwer, 1946. See Figure 10.
Date
1941
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