VWR Tip: Leave Grinding in the Past from vwr Watch Video
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Description: Grinding grooves, grinding slicks, and other features of sites created by ancient people should be left alone. By pretending to be an ancient, you can easily damage these features and erase important scientific value.
Play Video: (Note: The default playback of the video is HD VERSION. If your browser is buffering the video slowly, please play the REGULAR MP4 VERSION or Open The Video below for better experience. Thank you!)