Dam construction Source :NARA-NRG NaraID :115-CONSTPHO-85006-COLBASIN2-691 Photographer :N/A Personal Name :N/A Topical Name :N/A Geographical Name :N/A Institution Name :Bureau of Reclamation / Engineering and Research Center Bureau of Reclamation. Engineering and Research Center. Date :09/00/1935 State :N/A Country :USA

“A close-up picture of solid granite being prepared for the west dam abutment; the rock ledge at the right is where the west side mixing plant will be placed and above which is seen the floor of the conveyor suspension bridge for the sand and gravel supply; the steel structure on the mountainside is the west tower of the suspension bridge; the upper left hand corner shows the highway grade.“

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