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21971. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-8U2, Patterson Constr. Co., Contractor
CN-12-201-193NA Klamath Project - Oregon-California. View of trenching machine in action. Note the dirt being thrown out of trench by the digging chain. Note the plastic drainage tubing being threaded ...Citation -
21972. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN -12-201-195NA. Klamath Project - Oregon-California. View of pipe laying operation; November 1972; Bureau of Reclamation photo by D. W. SteinCitation -
21973. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-194NA Klamath Project - Oregon-California. Pipe is laid out in advance of the trenching operation and fed directly and continuously into the hopper unit where cinders are placed around it and ...Citation -
21974. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Construction Co., Contractor
CN-12-201-197NA Klamath Project - Oregon-California. Close-up view of cinders being fed into the hopper unit. Note how cinders are fed directly from the truck in a continuous operation; November 1972; ...Citation -
21975. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-198NA Klamath Project - Oregon-California. Scene showing refueling of trencher; November 1972; Bureau of Reclamation photo by D. W. SteinCitation -
21976. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-8142, Patterson Constr. Co., Contractor
CN-12-201-199MA. Klamath Project - Oregon-California. View of existing open drain. A closed drain will discharge into this open primary drain; December 1972; Bureau of Reclamation photo by D. W. SteinCitation -
21977. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-200NA Klamath Project - Oregon-California. View of an existing primary drain into which a closed drain will discharge. This picture shows a general X-section of the embankment that will be crossed ...Citation -
21978. [Image] Closed Drain Construction - Tule Lake Sump 3. Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-NA Klamath Project - Oregon-California. The area above outlet of the proposed closed drain was shaved down to keep the total cut to less than 5 feet. By doing this, the contractor did not have ...Citation -
21979. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No 200C-842, Patterson Constr. Co., Contractor
CN-12-201-202NA Klamath Project - Oregon-California. View of cutoff trench. The trenching machine dug the cutoff wall, but in doing so left a large amount of dirt in the excavated area. It was necessary ...Citation -
21980. [Image] View of trench outlet and of closed drain trench
CN-12-201-205NA Klamath Project - Oregon-California. Note plastic pipe stub. Later, it will be connected to steel outlet pipe; December 1972; Bureau of Reclamation photo by D. W. SteinCitation