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File:Removing air bubbles.jpg

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English: Work is being done to restore the serpentine stone at Six Logan Circle, Washington, D.C. The workmen shown here are cutting the air bubbles from the sides of the mold using a cake spatula during the first 10 seconds of the vibration process
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Source http://www.nps.gov/hps/tps/technotes/PTN23/Methodology.htm
Author James Smith
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current15:59, 14 April 2010Thumbnail for version as of 15:59, 14 April 2010672 × 810 (224 KB)Preservapedia (talk | contribs){{Information |Description={{en|1=The workmen shown here are cutting the air bubbles from the sides of the mold using a cake spatula during the first 10 seconds of the vibration process}} |Source=http://www.nps.gov/hps/tps/technotes/PTN23/Methodology.htm

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