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• 3161. [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. 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-12-201-250NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post shoving leveling screws; December 1972; Bureau of Reclamation photo by D. W. 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-12-201-250NA Klamath Project - Oregon-California. Close-up view of Laser Beam command post shoving leveling screws; December 1972; Bureau of Reclamation photo by D. W. Stein Close

• 3162. [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 × 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-12-201-251NA 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 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-12-201-251NA 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 1972; Bureau of Reclamation photo by D. W. Stein Close

• 3163. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-252NA. Klamath Project - Oregon-California. View of the top of the command post. The small cap at the top revolves like a beacon and emits a laser beam the width of a pencil. This establishes ...
  	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-12-201-252NA. Klamath Project - Oregon-California. View of the top of the command post. The small cap at the top revolves like a beacon and emits a laser beam the width of a pencil. This establishes a plane of light across the top of the field which parallels the desired grade of the closed draine (sic) line. The distance from the invert grade to the laser plane of light is constant along the whole length of the 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-12-201-252NA. Klamath Project - Oregon-California. View of the top of the command post. The small cap at the top revolves like a beacon and emits a laser beam the width of a pencil. This establishes a plane of light across the top of the field which parallels the desired grade of the closed draine (sic) line. The distance from the invert grade to the laser plane of light is constant along the whole length of the drain line; December 1972; Bureau of Reclamation photo by D. W. Stein Close

• 3164. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-253NA Klamath Project - Oregon-California. A standard 12-volt battery supplies power to the command post. Power consumption is quite low; December 1972; 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: 1972, 2009, 2007 CN-12-201-253NA Klamath Project - Oregon-California. A standard 12-volt battery supplies power to the command post. Power consumption is quite low; 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-12-201-253NA Klamath Project - Oregon-California. A standard 12-volt battery supplies power to the command post. Power consumption is quite low; December 1972; Bureau of Reclamation photo by D. W. Stein Close

• 3165. [Image] Closed Drain Construction - Tule Lake Sump 3 - Specs. No, 200C-842, Patterson Constr. Co., Contractor

  	CN-12-201-255NA Klamath Project - Oregon-California. View of Laser Beam receiver unit mounted on trencher; 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-12-201-255NA Klamath Project - Oregon-California. View of Laser Beam receiver unit mounted on 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-12-201-255NA Klamath Project - Oregon-California. View of Laser Beam receiver unit mounted on trencher; November 1972; Bureau of Reclamation photo by D. W. Stein Close

• 3166. [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

• 3167. [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

• 3168. [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

• 3169. [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

• 3170. [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