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Franz T. Blackert, SCS Engineer, Inspects Riser Section of Drawdown Structure at Site 10, Pilot and Sister Grove Creek
Photograph of Franz T. Blackert, SCS Engineer, Inspecting Riser Section of Drawdown Structure at Site 10, Pilot and Sister Grove Creek. The back of the photograph proclaims, "Franz T. Blackert, SCS engineer, inspects riser section of drawdown structure at site 10, Pilot and Sister Grove Creek watershed. Anti-seep collars are spaced along outlet pipe."
Date:
July 1, 1952
Creator:
Fox, Lester
System:
The Gateway to Oklahoma History