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Filter: Subject of dams
| Date: | 06 13 1913 |
|---|---|
| Description: | Workmen and machinery at the quarry on Blackhawk Bluff. The gravel was used in construction of the power dam. |
| Date: | 1931 |
|---|---|
| Description: | Men drive an International truck up a dirt road along the Colorado River during the construction of the Hoover Dam in Black Canyon. There is a steam, or po... |
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