Box 41
Contains 141 Results:
[454] River in foreground; wooded hillside in mid- and background. (Caption: 351.A^2. The Panama Canal: Madden Dam: East Bank at Dam Site. No. 1. Shows trench along line of dam and tests on L2 in operation. Feb. 29, 1929.), 1929
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[455] Placid water in foreground; wooded cliffside in background. Tunnel in the center of the picture. (Caption: 351.A^24. The Panama Canal. Madden Dam Project. Rock Pit RP-7, tunnel on right abutment of damsite No. 6-B. Pipe at mouth of tunnel is shot drill home N-4, on center laine of damsite. October 25, 1930.), 1930
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[456] Road extending from foreground all the way to the back of the image. Wooded roadside on both sides. (Caption: 351.C^6. The Panama Canal. Madden Dam Project. Transmission Line Tower No. 46. Looking toward summit; Quarry No. 1 in left background. June, 1931.) , 1931
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[457] Electric tower under construction. (Caption: 351.C^2. The Panama Canal. Madden Dam Project. Summit - Madden Dan Transmission Line Tower No. 13, type S.A.45. 10 ft. extension. June 5, 1931.), 1931
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[458] Concrete plant. (Caption: 351.X^38. The Panama Canal. Madden Dam Project. General view of concrete plant from left Ridge Dam near the head tower trestle. Auguest 3, 1934.), 1934
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[459] Placid water in foreground; eroded levee in midground; hillside topped with electrical tower. (Caption: 352.A^20. The Panama Canal. Madden Dam Project. Concreting operations on left abutment and erosion of levee by high water. September 6, 1932, 1932
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[460] Men excavating riverbed with shovels; surveyors on the right; huge rock wall in background. (Caption: 352.A^37. The Panama Canal. Madden Dam Project. Completed excavation for Power House. View looking South. November 24, 1932.), 1932
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[461] Landscape view of men doing excavation of dam area with shovels, etc. (Caption: 352.A^50. The Panama Canal. Madden Dam Project. View looking East from downstream cofferdam showing final excavation in Block 8 and placing of clay blanket. March 29, 1933.), 1933
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[462] Closeup view of men doing excavation of dam area with shovels, etc. (Caption: 352.A^51. The Panama Canal. Madden Dam Project. Final excavation in Block 8. View looking West. March 29, 1933.), 1933
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.
[463] Landscape view of dam under construction. Workers and grading in foreground, etc.(Caption: 352.A^53. The Panama Canal. Madden Dam Project. View looking west from upstream cofferdam showing forms in Block 8 in center and clay blanket. March 29, 1933.), 1933
This series contains photographs, negatives, and glass plate negatives regarding the Panama Canal and surrounding areas.