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Park Maintenance Staff Use Grinders to Remove Graffiti
In rare situations, graffiti is carved so deep that brushes will not suffice. In these cases, maintenance staff require grinders to remove the graffiti. This requires a large amount of staff time to remove, and even when the graffiti is removed, the rocks will never be the same.
Credit: NPS/Chris Wonderly. Original public domain image from Flickr
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