Interesting video about cleaning the historic sites. http://www.cnn.com/video/#/video/business/2011/03/29/qmb.fc.rome.preservation.cnn?hpt=Sbin
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Interesting video about cleaning the historic sites. http://www.cnn.com/video/#/video/business/2011/03/29/qmb.fc.rome.preservation.cnn?hpt=Sbin
I can't imagine cleaning such gigantic structures millimeter by millimeter, sometimes with a toothbrush! What a task!