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| Date: | |
|---|---|
| Description: | The head gate at the Big Horn Ditch on the Crow Reservation in northeast Wyoming. Men are working with cranes near a tent with a chimney spewing out smoke. |
| Date: | 1960 |
|---|---|
| Description: | Excavation for bridge column footings for the Mirror Lake Bridge. |
| Date: | 11 16 1960 |
|---|---|
| Description: | Elevated view of the interstate highway bridge construction at Mirror Lake showing the concrete footings halfway down the embankment. |
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