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	P12-200-2926NA Klamath Project - Oregon-California. View of hopper unit and digging chain in position to start excavating a new closed drain line; November 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, 2008, 2006 P12-200-2926NA Klamath Project - Oregon-California. View of hopper unit and digging chain in position to start excavating a new closed 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 P12-200-2926NA Klamath Project - Oregon-California. View of hopper unit and digging chain in position to start excavating a new closed drain line; November 1972; Bureau of Reclamation photo by D. W. Stein


	P12-200-2931NA Klamath Project - Oregon-California. Rear-end view of hopper unit. Pipe is fed out of the round hole at the bottom and cinders are placed around the pipe as it is being extruded from 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 P12-200-2931NA Klamath Project - Oregon-California. Rear-end view of hopper unit. Pipe is fed out of the round hole at the bottom and cinders are placed around the pipe as it is being extruded from the hopper unit; 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 P12-200-2931NA Klamath Project - Oregon-California. Rear-end view of hopper unit. Pipe is fed out of the round hole at the bottom and cinders are placed around the pipe as it is being extruded from the hopper unit; November 1972; Bureau of Reclamation photo by D. W. Stein


	P12-200-2945NA Klamath Project - Oregon-California. Laser Beam Receiving Unit shown attached to trenching machine; 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, 2008, 2006 P12-200-2945NA Klamath Project - Oregon-California. Laser Beam Receiving Unit shown attached to trenching machine; 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 P12-200-2945NA Klamath Project - Oregon-California. Laser Beam Receiving Unit shown attached to trenching machine; December 1972; Bureau of Reclamation photo by D. W. Stein


	P12-200-2946NA Klamath Project - Oregon-California. View of Laser Beam Receiving Unit mounted on trencher. Note that the control panel for receiver unit is mounted to the left of controls for trencher; ...
	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 P12-200-2946NA Klamath Project - Oregon-California. View of Laser Beam Receiving Unit mounted on trencher. Note that the control panel for receiver unit is mounted to the left of controls for trencher; 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 P12-200-2946NA Klamath Project - Oregon-California. View of Laser Beam Receiving Unit mounted on trencher. Note that the control panel for receiver unit is mounted to the left of controls for trencher; December 1972; Bureau of Reclamation photo by D. W. Stein


	P12-200-2947NA Klamath Project - Oregon-California. View alongside of trencher showing horizontal alignment staffs. The operator sighted down the poles and was able to obtain very good alignment; 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, 2008, 2006 P12-200-2947NA Klamath Project - Oregon-California. View alongside of trencher showing horizontal alignment staffs. The operator sighted down the poles and was able to obtain very good alignment; 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 P12-200-2947NA Klamath Project - Oregon-California. View alongside of trencher showing horizontal alignment staffs. The operator sighted down the poles and was able to obtain very good alignment; December 1972; Bureau of Reclamation photo by D. W. Stein