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Photograph

Analyzing Composition of Cement

Date: 09 20 1956
Description: Katharine Mather of the Corps of Engineers Waterways Experiment Station checks a computer analysis of the composition of cement.
Photograph

Man Giving Directions to Truck Driver

Date: 
Description: A man identified as R.S. Wilson, Jr., who is wearing a hat and a suit, gives directions to a truck driver working for Big Rock Stone & Material Co. The ori...
Photograph

Men Pouring Concrete

Date: 
Description: Elevated view of workers putting in concrete to create an apron for the power dam they're building. Two men in suits are standing on a platform on the far ...

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