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

United States. Bureau of Reclamation

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

Creator

United States. Bureau of Reclamation

Source

Original photograph: 13 x 10 cm, color photograph, caption under photo reads “CN-12-201-254NA Klamath Project - Oregon-California Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor 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. Feb. 1973 Bureau of Reclamation photo by D. W. Stein" from Black Binders
Digital reproduction of photograph: CN-12-201-254NA Klamath Project - Oregon-California, Black Binders, Bureau of Reclamation

Date Original

1973-02

Date Digitized

2007-03-27

Date Available

2009-12-28

Other Identifiers

local: BOR-27-Mar-2007-4671

Subject (Topic)

Irrigation projects
Klamath Project (U.S.) -- History
Laser beams
Trenches
Klamath Project Construction
Tule Lake Sump (California)

Format

image