Factories / Concrete / Concrete products industry / Excavation / Dam construction
Source :NARA-NRG
NaraID :115-CONSTPHO-85006-COLBASIN2-784
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 :10/31/1935
State :N/A
Country :USA
| 
)