National Park Service To Test Dry Ice Blasting To Clean Historic Structure

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The National Park Service faced a difficult problem for cleaning and removing the paint on the historic Cape Hatteras Lighthouse in Cape Hatteras National Seashore as part of the renovation of the structure.  It is currently testing the use of dry ice blasting because, unlike using sand blasting or traditional paint removers, the dry ice pellets turn to carbon dioxide gas, thus leaving no residue on the structure nor causing any damage to the natural environment.  NPS contracted with HydroPrep to conduct the test.  If successful, it will likely take five months to clean the entire lighthouse.  NPS received funding from Congress for the renovation.

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