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Warren A. Bechtel Album of Hoover Dam: photographic print

Image
File
Download pho027842-008.tif (image/tiff; 57.75 MB)

Information

Date
1971-05-04
Description
Drilling jumbos (aka Williams Jumbo) mounted on the back of a truck for starting construction of lower portal No. 4, Arizona side of Black Canyon. 9-26-31. (This first wood-frame jumbo was experimental - the jumbos later were steel pipe)
Digital ID
pho027842-008
Physical Identifier
0267_0007
    Details
    Publisher
    University of Nevada, Las Vegas. Libraries