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McNary Dam construction. 1950

"Aerial view shows gap in cofferdam at McNary dam which will be closed by dropping huge pyramid-shaped blocks to divert river through completed locks and spillway on Washington side, after which final work can begin." caption published 10/15/50 Oregonian pg. 17.

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Y-501011A-01.tif
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HistoricPhotoArchive.net
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"Aerial view shows gap in cofferdam at McNary dam which will be closed by dropping huge pyramid-shaped blocks to divert river through completed locks and spillway on Washington side, after which final work can begin." caption published 10/15/50 Oregonian pg. 17.