3.10 waa Property Evacuation 3-52 J-4 made pre-shot surveys to ensure that all excess equipment and material had been evacuated from the shot island and those areas subject to significant effects. J-4 assisted H&N in getting material to the beaches and in relocating it when it was received on the base islands. Vehicles, trailers, and other equipment which would no longer be required at Bikini after a particular shot were turned over to J-4 prior to the shot for further shipment to Eniwetok. The shot phase evacuation of scientific trailers. involved, besides the users, J-3, J-4, J-6 and H&N. In general, the procedure was for J-3 to determine when the scientific users could afford to release the trailers, particulary those aboard houseboats, and also to determine the facilities required during evacuation and reentry, such as power for dehumidifiers and air conditions. water for Photo Lab tanks, etc. The actual movement of the trailers was accomplished by H&N personnel under J-4 supervision. LANL RC .- 11 ua PAGE Apr