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Filter: Subject of Dredges
Filter: Community of Prairie du Sac
| Date: | 07 01 1911 |
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| Description: | A steam-powered centrifugal sand pump at work on the Wisconsin River during the construction of the power dam. Pilings of the coffer dam are visible in the... |
| Date: | 07 27 1911 |
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| Description: | Elevated view of the power dam construction site on the Wisconsin River from the west shore. The outline of the coffer dam is easily seen. Three steam-pow... |
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