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Detail image of side-wall "jumbo" used in placing 3-foot thick lining in diversion tunnels. Side wings are jacked into place, and concrete is poured through ports by a traveling crane and 2 yard buckets: photographic print, 1932 April 18

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

First "jumbo" for pouring concrete lining in top or arch section of tunnels was erected on "beach" in front of tunnel Number 2 and transported across river in sections by cableway: photographic print, 1932 May 20

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

View showing forms set for first side-wall pour in upper portal of tunnel Number 3. Form is 80-feet long and consists of four 20-foot sections bolted together. Note size of man in upper right: photographic print, 1932 April 29

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

Excavation for benches for movable cableway towers being carried on, near Lookout Point: photographic print, 1932 August 14

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

Workmen loading holes with dynamite, in preparation for blast on cableway bench excavation: photographic print, 1932 August 15

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

"Powder-monkeys" load dynamite cartridges with electric primers at isolated points: photographic print, 1932 August 15

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

Preparing for blast which demolished Lookout Point, to make way for cableway bench excavation: photographic print, 1932 August 14

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component

Three hundred boxes of dynamite were used in spectacular blast which demolished the old Lookout Point. Photograph taken from the new Lookout Point, on Black Canyon Highway: photographic print, 1932 August 16

To request this item in person:
Collection Number: PH-00267
Collection Name: Six Companies, Inc. Hoover Dam Photograph Collection
Box/Folder: Oversized Box 03

Archival Component