All Subjects
      All Types

        Info

        Grades

        1-12

        Permitted Use

        Stream, Download, Share, and Modify


        0 Favorites
        12 Views

        Drilling Under Dam | Human Impact on the Physical Environment | Geography

        circa 1955: Engineers at work, positioning a drill in the lowermost gallery of the Grand Coulee Dam, Washington State, USA. (Photo by Three Lions/Getty Images)

        You must be logged in to use this feature

        Need an account?
        Register Now