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

United States. Bureau of Reclamation

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

Creator

United States. Bureau of Reclamation

Source

Original photograph: 13 x 10 cm, color photograph, caption under photo reads “CN-12-201-252NA. Klamath Project - Oregon-California Closed Drain Construction - Tule Lake Sump 3 - Specs. No. 200C-842, Patterson Constr. Co., Contractor 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 line. The distance from the invert grade to the laser plane of light is constant along the whole length of the drain line. Dec. 1972 Bureau of Reclamation photo by D. W. Stein", from Black Binders.
Digital reproduction of photograph: CN-12-201-252NA Klamath Project – Oregon-California, Black Binders, Bureau of Reclamation

Date Original

1972-12

Date Digitized

2007-03-27

Date Available

2009-09-09

Other Identifiers

local: BOR-27-Mar-2007-4669

Subject (Topic)

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

Format

image