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• 31. [Image] Closed Drain Construction - Tule Lake Sump 3 – Specs. No. 200C-842, Patterson Construction Company, Contractor

  	CN-12-201-184NA Klamath Project - Oregon-California. Side view of the hopper unit used to feed both pipe and cinders into the trench. The digging chain for the trencher is mounted directly in front of ...
  	Citation × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 – Specs. No. 200C-842, Patterson Construction Company, Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 CN-12-201-184NA Klamath Project - Oregon-California. Side view of the hopper unit used to feed both pipe and cinders into the trench. The digging chain for the trencher is mounted directly in front of the hopper unit. Operator Charles Schmidli is shown at the controls; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 – Specs. No. 200C-842, Patterson Construction Company, Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 CN-12-201-184NA Klamath Project - Oregon-California. Side view of the hopper unit used to feed both pipe and cinders into the trench. The digging chain for the trencher is mounted directly in front of the hopper unit. Operator Charles Schmidli is shown at the controls; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 32. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 of America; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 of America; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 33. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 at right angles to the closed drain line; December 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 at right angles to the closed drain line; December 1972; Bureau of Reclamation photo by D. W. Stein Close

• 34. [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. Stein
  	Citation × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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. Stein Close

• 35. [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. Stein
  	Citation × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 CN-12-201-186NA Klamath Project - Oregon-California. View of trenching machine and hopper unit; December 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 CN-12-201-186NA Klamath Project - Oregon-California. View of trenching machine and hopper unit; December 1972; Bureau of Reclamation photo by D. W. Stein Close

• 36. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs, No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 which is located behind the trencher; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs, No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 which is located behind the trencher; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 37. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 1972; Bureau of Reclamation photo by D. W. Stein Close

• 38. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 belt is powered by a small gasoline motor. The conveyor itself is towed forward by each dump truck as they move forward with the trencher; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 belt is powered by a small gasoline motor. The conveyor itself is towed forward by each dump truck as they move forward with the trencher; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 39. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 2009, 2007 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 by picking out oversize and filling voids that develop under the screen. The cinders are placed in the bottom of the trench by the hopper to form an envelope around the plastic drainage tubing; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 2009, 2007 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 by picking out oversize and filling voids that develop under the screen. The cinders are placed in the bottom of the trench by the hopper to form an envelope around the plastic drainage tubing; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 40. [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 × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-8U2, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 into the hopper unit. Guides on the trencher and hopper keep the plastic tubing from fouling; November 1972; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-8U2, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1972, 2009, 2007 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 into the hopper unit. Guides on the trencher and hopper keep the plastic tubing from fouling; November 1972; Bureau of Reclamation photo by D. W. Stein Close