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Looking out of upper portal of diversion tunnel Number 2. Bucyrus-Erie 43-B gas-air shovel reflected in pool of water: photographic print, 1932 March 07
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Flashlight close-up of workmen drilling on invert excavation: photographic print, 1932 March 07
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Flashlight photograph of drilling jumbo working on invert excavation at upper portal of diversion tunnel Number 4: photographic print, 1932 March 08
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Wings extended for drilling fold back against the sides of drilling jumbo: photographic print, 1932 March 08
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
First-aid station and ambulance located at river camp above upper portals. Similar hospital is maintained at lower portals: photographic print, 1932 March 08
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Interior of one of many drill sharpening stations, showing forge and Ingersoll-Rand drill sharpener: photographic print, 1932 February 15
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Caterpillar 60 with bull-dozer in front and cow-dozer aft, used extensively for moving muck: photographic print, 1932 March 08
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Two levels of highway which will cross top of the dam. Note the rubble stone masonry retaining wall. High-level concrete mixing plant will be located in the draw in foreground: photographic print, 1932 March 02
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Looking upstream at Black Canyon. Dam will be located just upstream from footbridge, at bottom of picture. Entrance to upper portals of diversion tunnels opposite the middle truck bridge: photographic print, 1932 March 12
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
Looking downstream from same point as photograph number 989. Lower portals of diversion tunnels are just below. This picture presents graphic view of problem of muck disposal: photographic print, 1932 March 14
Level of Description
Item
Archival Collection
Six Companies, Inc. Hoover Dam Photograph Collection
Archival Component
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