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1. [Image] View showing excavation of pipe trench near the irrigation crossing


	P12-200-2867NA Klamath Project - Oregon; May 16, 1969; Bureau of Reclamation photo by J. K. Bryant
	Citation Citation Citation Abstract Copy Title: View showing excavation of pipe trench near the irrigation crossing Author: United States. Bureau of Reclamation, Bryant, J.K. Year: 1965, 2008, 2006 P12-200-2867NA Klamath Project - Oregon; May 16, 1969; Bureau of Reclamation photo by J. K. Bryant Title: View showing excavation of pipe trench near the irrigation crossing Author: United States. Bureau of Reclamation, Bryant, J.K. Year: 1965, 2008, 2006 P12-200-2867NA Klamath Project - Oregon; May 16, 1969; Bureau of Reclamation photo by J. K. Bryant

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


	P12-200-2910NA Klamath Project - Oregon-California. View of trencher starting to excavate a drain line. The hopper and digging unit are dropped into place at the outlet of the proposed line. Then, the ...
	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, 2008, 2006 P12-200-2910NA Klamath Project - Oregon-California. View of trencher starting to excavate a drain line. The hopper and digging unit are dropped into place at the outlet of the proposed line. Then, the trencher begins to dig its way toward the interior of the field. A laser control system is used to keep the trencher on grade; 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, 2008, 2006 P12-200-2910NA Klamath Project - Oregon-California. View of trencher starting to excavate a drain line. The hopper and digging unit are dropped into place at the outlet of the proposed line. Then, the trencher begins to dig its way toward the interior of the field. A laser control system is used to keep the trencher on grade; December 1972; Bureau of Reclamation photo by D. W. Stein

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


	P12-200-2917NA Klamath Project - Oregon-California. View of trenching equipment. The trencher is almost at the end of a newly installed closed drain line. Note the workman threading a short section of ...
	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, 2008, 2006 P12-200-2917NA Klamath Project - Oregon-California. View of trenching equipment. The trencher is almost at the end of a newly installed closed drain line. Note the workman threading a short section of plastic drainage tubing into the hopper. This short section will be used to pull plastic tubing into hopper for easy placement in trench when trencher moves to next drain line; 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, 2008, 2006 P12-200-2917NA Klamath Project - Oregon-California. View of trenching equipment. The trencher is almost at the end of a newly installed closed drain line. Note the workman threading a short section of plastic drainage tubing into the hopper. This short section will be used to pull plastic tubing into hopper for easy placement in trench when trencher moves to next drain line; November 1972; Bureau of Reclamation photo by D. W. Stein

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


	P12-200-2920NA Klamath Project - Oregon-California. Inspector Derrill Stein is shown in foreground. He is watching the construction operation to see that the work performed by the contractor meets the ...
	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, Coburn, John Year: 1972, 2008, 2006 P12-200-2920NA Klamath Project - Oregon-California. Inspector Derrill Stein is shown in foreground. He is watching the construction operation to see that the work performed by the contractor meets the standards set forth in the specifications; November 1972; Bureau of Reclamation photo by John Coburn Title: Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor Author: United States. Bureau of Reclamation, Coburn, John Year: 1972, 2008, 2006 P12-200-2920NA Klamath Project - Oregon-California. Inspector Derrill Stein is shown in foreground. He is watching the construction operation to see that the work performed by the contractor meets the standards set forth in the specifications; November 1972; Bureau of Reclamation photo by John Coburn

5. [Image] Closed Drain Construction in Tule Lake Sump 3 - Specs. No. 200C-821


	CN-12-200-64A Klamath Project - Oregon-California. Looking west at equipment developed and used by Contractor to excavate and install plastic drainage tubing in one operation. Note that the trencher tows ...
	Citation Citation Citation Abstract Copy Title: Closed Drain Construction in Tule Lake Sump 3 - Specs. No. 200C-821 Author: United States. Bureau of Reclamation, Bryant, J.K. Year: 1971, 2010, 2007 CN-12-200-64A Klamath Project - Oregon-California. Looking west at equipment developed and used by Contractor to excavate and install plastic drainage tubing in one operation. Note that the trencher tows a hopper which contains and places the cinder envelope around the drainage tubing. Metal shields support the vertical walls of the open trench between the trencher and the hopper. The guide on the bottom of the hopper positions the drainage tubing as it is pulled into the trench. Contractor Don Johnson is shown operating the trenching machine; February 18, 1971; Bureau of Recl. photo by J.K. Bryant Title: Closed Drain Construction in Tule Lake Sump 3 - Specs. No. 200C-821 Author: United States. Bureau of Reclamation, Bryant, J.K. Year: 1971, 2010, 2007 CN-12-200-64A Klamath Project - Oregon-California. Looking west at equipment developed and used by Contractor to excavate and install plastic drainage tubing in one operation. Note that the trencher tows a hopper which contains and places the cinder envelope around the drainage tubing. Metal shields support the vertical walls of the open trench between the trencher and the hopper. The guide on the bottom of the hopper positions the drainage tubing as it is pulled into the trench. Contractor Don Johnson is shown operating the trenching machine; February 18, 1971; Bureau of Recl. photo by J.K. Bryant