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Apple QuickTime movie  |  1996-06-03  |  10.6 MB  |  720x480  |  29.97fps  |  48 seconds  |  [MooV/TVOD]
Transcription: A bulldozer is used to level the land where the road will be built, establishing the grade along the surveyed route. On the job site, the bulldozer operator uses levers to adjust the blade, pushing and spreading loosened soil over the road surface. The bulldozer moves back and forth on its crawler tracks which keep it from getting stuck in the muck and loose dirt.