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South Dakota State Library: Digital Collections

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  • All fields: Casagrand, Arthur
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    • Faulty Shale Changes Plans On Pierre Dam

    • Oahe Dam (S.D.); Missouri River Basin Project (U.S.); Dams--South Dakota; United States. Army. Corps of Engineers.; Soils--South Dakota; Hayes, Thomas J., Colonel; Casagrand, Arthur; Harper, S.O.; Kramer, Hans, Brigadier General; Carlson, Roy;...
    • To avoid encountering faulty Oacoma shale, the power tunnels will be straightened, shortened and dug to a greater depth. The intake control works will now be at the intake portal and the power house will be moved several hundred feet downstream.

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