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Photograph

Three-Deck Drilling Platform at Hoover Dam

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...
Photograph

TD-24 — Dams & Levees

Date: 1950
Description: Elevated view of tamping rolls to put hard core in earth dam. Subject: "TD-24 — Dams & Levees." Information with photograph reads: "Owned by Harlan County ...

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