Construction of dam: LSs, MSs of concrete pouring operation, of large buckets moving back and forth across dam face, being refilled. Shots of men packing concrete with pneumatic vibrators. HAS of bulldozer leveling out concrete. TILT DOWN from concrete bucket to men working underneath. LS, LAMLSs of vehicle slung underneath concrete, bucket being moved from place to place. LAS of dam, towering above the camera.