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View of cut-off trench looking toward the right abutment of the dam from the upstream rim of the cut-off trench opposite station 33+50. Refer to Pine R - 71
Looking toward right abutment in cut-off trench. Part of footing for concrete wall is seen on slope. Wagon drill is working on 50-foot grout hole. Refer to Pine R - 66.
Cut-off trench excavation looking toward left abutment from a point opposite sta. 27+50. Survey crew is seen working at deepest portion of trench, which was through the sand pocket at station 23+25.
Placing concrete in cut-off wall opposite station 33+50, looking toward the right abutment. At left center concrete from the pump-crete pipe line is flowing into a hopper from which it is wheeled in buggies to the point of placement.
Looking toward the right abutment along centerline of the cut-off trench from opposite dam axis sta. 30+50, cut-off wall is completed, and placing of hand-compacted embankment has been started.
Cut-off trench excavation looking toward left abutment from a point opposite sta. 24+00. The excavation is complete from the transit in foreground to the group standing in bottom of trench.
Cut-off trench excavation from sta. 20+00 to the river. A small section of embankment is shown in the immediate foreground. The remainder of the trench is being prepared to receive embankment.
Looking along center line of cut-off trench toward left abutment from opposite dam axis station 8+00. Note rock excavation for cut-off wall footing in center.