which resulted in a decision to plant all of the mines for Shot UNION; the remaining mines were therefore planted by RECLAIMERand LST-1157 on 25 April. Recovery of the mines by RECLAIMER was accomplished over a period of several days, commencing on 28 April. The recovered mines were washed down to reducethe levels of radioactivity as they were brought aboard. Personnel handling the mines and recovery gear used special clothing, gloves and equipment. While on RECLAIMERandlater after transfer to LST1157, the mines were kept topside and were constantly checked for radioactivity; those mines with higher levels of radioactivity were washed or scrubbed down. The mines and the mine project personnel were transferred from LST-1157 to SHEA on 3 May; SHEAtransported the mines to Pearl Harborfor final analysis. 3.1.2 Project 1.4 - Underwater Pressure Measurements (Reference 12). This project involved placement, servicing and recovery of several large instrument buoys (cans) and was conducted at Shots BRAVO and ROMEO(Area Charlie), Shot UNION (Area Dog), and Shot YANKEE(Area Fox), in Bikini Lagoon (see figure 2.1). COCOPA, MENDER and TAWAKONI,along with support barges and several small boats, were involved in the various project activities. The project was also conducted at Shot NECTARat Enewetak by contractor personnel from Holmes and Narver (H&N). After the initia] laying of the buoys for Shot BRAVO, all of the laying, servicing, and recovery Operations were conducted in radiation-contaminated waters; the buoys themselves were also contaminated. COCOPAwasthe principal participant in buoy servicing and recovery operations throughthefirst three shots. Primarily as a result of recovery operations in Area Dog following Shot UNION (see figure 2.1), the ambient radioactivity levels aboard COCOPA became higher than the permissible limit and the mission wastransferred to TAWAKONT forthe remainderofthe project participation at Bikini. The project report states that protective clothing was worn while handling the contaminated buoys; the same report indicates that swimmers from the support ships were also utilized in the recovery operations. 20