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Filter: Community of Boulder City
| Date: | 03 1932 |
|---|---|
| Description: | Men are standing on scaffolding built into the walls of a canyon during the construction of the Hoover Dam. An electric shovel is moving pieces of dynamite... |
| Date: | 1932 |
|---|---|
| Description: | Front view of a three-deck drilling platform mounted on an International truck. The device was used in the interior of the tunnels during construction of t... |
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