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81. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-185NA Klamath Project - Oregon-California. Side view of the hopper unit manufactured by Alfred M. Lewis Company, Klamath Falls, Oregon, in accordance with specifications furnished by Hoes Gigant ...Citation -
82. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-187NA Klamath Project - Oregon-California. View of trenching machine beginning to dig a cut off trench at outlet end of a yet to be constructed closed drain line. The cut off trenches are installed ...Citation -
83. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-188NA Klamath Project - Oregon-California. View of trenching machine digging a cut-off trench at outlet end of a closed drain line; December 1972; Bureau of Reclamation photo by D. W. SteinCitation -
84. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-186NA Klamath Project - Oregon-California. View of trenching machine and hopper unit; December 1972; Bureau of Reclamation photo by D. W. SteinCitation -
85. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs, No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-189NA Klamath Project - Oregon-California. View of trenching machine and dump truck traveling side by side. The trencher is excavating the trench. The truck is discharging cinders into hopper ...Citation -
86. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-190NA Klamath Project - Oregon-California. View of trenching machine and dump truck loaded with cinders. Plastic drainage tubing is laid out in advance of the trenching operations; November ...Citation -
87. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-191NA Klamath Project - Oregon-California. View of cinders being discharged onto a conveyor belt which, in turn, discharges the cinders into the hopper unit behind the trencher. The conveyor ...Citation -
88. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor
CN-12-201-192NA Klamath Project - Oregon-California. View of pipe laying operation. The man in truck helps push cinders into the conveyor unit. The man on the hopper unit keeps cinders moving smoothly ...Citation -
89. [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 -
90. [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