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    Preserving a national treasure: Tomb of the Unknowns [Image 23 of 61]

    Preserving a national treasure: Tomb of the Unknowns

    BALTIMORE, MD, UNITED STATES

    09.08.2011

    Photo by Kerry Solan 

    U.S. Army Corps of Engineers, Norfolk District

    The mixture used to fill the cracks in the stone at the Tomb of the Unknown must be the right mixture of lime, cement and crushed marble in order to bond to the stone. Here, ingredients in the mix are shown.

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    IMAGE INFO

    Date Taken: 09.08.2011
    Date Posted: 09.20.2011 16:44
    Photo ID: 459573
    VIRIN: 110908-A-ET072-270
    Resolution: 2160x1552
    Size: 922.73 KB
    Location: BALTIMORE, MD, US 

    Web Views: 1
    Downloads: 5
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