Title
Marine geologist on a survey
Caption
Marine geologist on a survey; planting a hydrophone anchor with the cable attached. The Hydrophone would pick up sound from an underwater man made explosion. Geodetic Survey; Cape Blanco area; Oregon; USA 1924
Date
1924
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP17A26_057
License type
Rights managed
Available size
60,0Mb (2,0Mb) / 12,4in x 18,8in / 3725 x 5630 (300dpi)