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Apple QuickTime movie  |  1996-06-03  |  6.2 MB  |  720x480  |  29.97fps  |  30 seconds  |  [MooV/TVOD]
Transcription: After the bulldozer has spread out the piles of soil, gravel or sand, the grader is called in to smooth the road surface. Using a long sharp blade called a moldboard, the grader scrapes away the high parts and fills in the low parts so that the road will be flat and smooth. It levels the road surface to the exact marks of the surveyor. you