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• 22031. [Image] Closed Drain Construction - Tule Lake Sump 3 – Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-256NA Klamath Project - Oregon-California. View of laser control panel. Red, yellow and green lights indicate if the trencher is on grade. Facing the camera is A. H. Patterson, the contractor; ...
  	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-12-201-256NA Klamath Project - Oregon-California. View of laser control panel. Red, yellow and green lights indicate if the trencher is on grade. Facing the camera is A. H. Patterson, the contractor; 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-12-201-256NA Klamath Project - Oregon-California. View of laser control panel. Red, yellow and green lights indicate if the trencher is on grade. Facing the camera is A. H. Patterson, the contractor; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 22032. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-254NA Klamath Project - Oregon-California. View of receiver unit mounted on top of the trencher. The location of the laser beam is sensed by this unit. This information is passed to an analog ...
  	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: 1973, 2009, 2007 CN-12-201-254NA Klamath Project - Oregon-California. View of receiver unit mounted on top of the trencher. The location of the laser beam is sensed by this unit. This information is passed to an analog computer which operates the hydraulic controls on the trencher. Thus, the receiver unit automatically maintains the digging unit at the desired grade; February 1973; 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: 1973, 2009, 2007 CN-12-201-254NA Klamath Project - Oregon-California. View of receiver unit mounted on top of the trencher. The location of the laser beam is sensed by this unit. This information is passed to an analog computer which operates the hydraulic controls on the trencher. Thus, the receiver unit automatically maintains the digging unit at the desired grade; February 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22033. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-257NA Klamath Project - Oregon-California. View of the Laser Beam control panel; November 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-12-201-257NA Klamath Project - Oregon-California. View of the Laser Beam control panel; 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-12-201-257NA Klamath Project - Oregon-California. View of the Laser Beam control panel; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 22034. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-259NA Klamath Project - Oregon-California. View looking north along road to be constructed. Motor patrol was preparing road bed to receive road base material. (Note alignment and grade stakes); ...
  	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: 1973, 2009, 2007 CN-12-201-259NA Klamath Project - Oregon-California. View looking north along road to be constructed. Motor patrol was preparing road bed to receive road base material. (Note alignment and grade stakes); February 1973; 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: 1973, 2009, 2007 CN-12-201-259NA Klamath Project - Oregon-California. View looking north along road to be constructed. Motor patrol was preparing road bed to receive road base material. (Note alignment and grade stakes); February 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22035. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-260NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material; February 1973; 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: 1973, 2009, 2007 CN-12-201-260NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material; February 1973; 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: 1973, 2009, 2007 CN-12-201-260NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material; February 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22036. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-261NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material. Note muddy condition caused by rain; February 1973; Bureau of Reclamation photo by D. W. ...
  	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: 1973, 2009, 2007 CN-12-201-261NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material. Note muddy condition caused by rain; February 1973; 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: 1973, 2009, 2007 CN-12-201-261NA Klamath Project - Oregon-California. View of road bed prior to placement of road base material. Note muddy condition caused by rain; February 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22037. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-262NA Klamath Project - Oregon-California. View of a front-end loader loading a 10 c.y. dump truck with road base material from a pit owned by the Bureau of Reclamation. The pit is located in ...
  	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: 1973, 2009, 2007 CN-12-201-262NA Klamath Project - Oregon-California. View of a front-end loader loading a 10 c.y. dump truck with road base material from a pit owned by the Bureau of Reclamation. The pit is located in Section 15, Township and Range 5 East; March 1973; 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: 1973, 2009, 2007 CN-12-201-262NA Klamath Project - Oregon-California. View of a front-end loader loading a 10 c.y. dump truck with road base material from a pit owned by the Bureau of Reclamation. The pit is located in Section 15, Township and Range 5 East; March 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22038. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No, 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-258NA Klamath Project - Oregon-California. Another view of the Laser Beam control panel; November 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-12-201-258NA Klamath Project - Oregon-California. Another view of the Laser Beam control panel; 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-12-201-258NA Klamath Project - Oregon-California. Another view of the Laser Beam control panel; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 22039. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 2000-842, Patterson Constr. Co., Contractor

  	CN-12-201-263NA Klamath Project - Oregon-California. Overall view of borrow pit used by the contractor for road base material. Pit is also used by Modoc County under a USBR license; March 1973; Bureau ...
  	Citation × Citation Citation Abstract Copy Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 2000-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1973, 2009, 2007 CN-12-201-263NA Klamath Project - Oregon-California. Overall view of borrow pit used by the contractor for road base material. Pit is also used by Modoc County under a USBR license; March 1973; Bureau of Reclamation photo by D. W. Stein Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 2000-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Stein, D.W. Year: 1973, 2009, 2007 CN-12-201-263NA Klamath Project - Oregon-California. Overall view of borrow pit used by the contractor for road base material. Pit is also used by Modoc County under a USBR license; March 1973; Bureau of Reclamation photo by D. W. Stein Close

• 22040. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-264NA Klamath Project - Oregon-California. View of DW-20 scraper hauling road base material from the USBR pit at the south end of Sump 1-A. Owing to their large capacity (25 c.y.) and resultant ...
  	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: 1973, 2009, 2007 CN-12-201-264NA Klamath Project - Oregon-California. View of DW-20 scraper hauling road base material from the USBR pit at the south end of Sump 1-A. Owing to their large capacity (25 c.y.) and resultant weight, the use of scrapers proved to be an unsuccessful method of moving dirt around in the sump area. In driving across previously filled areas, the loaded scrapers forced the road base material down into the ground; February 1973; 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: 1973, 2009, 2007 CN-12-201-264NA Klamath Project - Oregon-California. View of DW-20 scraper hauling road base material from the USBR pit at the south end of Sump 1-A. Owing to their large capacity (25 c.y.) and resultant weight, the use of scrapers proved to be an unsuccessful method of moving dirt around in the sump area. In driving across previously filled areas, the loaded scrapers forced the road base material down into the ground; February 1973; Bureau of Reclamation photo by D. W. Stein Close