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2331. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No, 200C-842, Patterson Constr. Co., Contractor
CN-12-201-241NA Klamath Project - Oregon-California. View of D-8 cat ripping frozen ground. During the coldest period, frost depths ranged from 3 inches to 12 inches below ground surface; February 1973; ...Citation -
2332. [Image] Closed Drain Construction - Tule Lake Sump 3- Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-243NA Klamath Project - Oregon-California. View of D-8 cat smoothing and compacting drain that has just been filled; November 1972; Bureau of Reclamation photo by D. W. SteinCitation -
2333. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs . No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-244NA Klamath Project - Oregon-California. Overall view of drain that has been filled and accepted as complete; November 1972; Bureau of Reclamation photo by D, W. SteinCitation -
2334. [Image] Closed Drain Construction - Tule Lake Sump 3 – Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-245NA Klamath Project - Oregon-California. Overall view of drain that has been filled and accepted as complete; November 1972; Bureau of Reclamation photo by D. W. SteinCitation -
2335. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-246NA Klamath Project - Oregon-California. View showing location of Laser Beam command post in the middle of the field. The tripod, which supports the command post, was set up and leveled adjacent ...Citation -
2336. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-247NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post. Note the drainage tubing laid out in the background prior to construction; December 1972; Bureau of Reclamation ...Citation -
2337. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-248NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post; December 1972; Bureau of Reclamation photo by D. W. SteinCitation -
2338. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-249NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post showing adjustment screws. The head is leveled in the same manner that a theodolite is leveled. The crank ...Citation -
2339. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-250NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post shoving leveling screws; December 1972; Bureau of Reclamation photo by D. W. SteinCitation -
2340. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-251NA Klamath Project - Oregon-California. View of Laser Beam command post controls. Note the two bubbles used for leveling the apparatus. The dial is to set the beam on the desired slope; December ...Citation