AUS completed the installation of 585 concrete stop logs weighing 60 tons each at Wanapum Dam. The dam is located on the Columbia River, 6 miles downstream of Vantage. The stop-logs were set, drilled and bolted to the dam’s future unit slots to increase the stability of the dam between the powerhouse and the spillway. At peak production, the project required the use of 32 divers working on two barges 20 hours per day. During a four-month period, AUS divers completed more than 900 core-drilled holes in 650 dives of up to 120 feet.
