The Vehicle and Equipment Decon Section was responsible for the decontamination of all contaminated vehicles and equipment to levels less than the permissible tolerances. failed, Ina few instances when steam and chemical cleaning sandblasting was utilized to bring the radioactive contamination to the permissible level. A list of the major equipment which was processed through the decon lot follows: Eniwetok Trucks Jeeps DUKW's Cat's Skip-loaders Generators 20 10 17 9 2 4 Bikini 18 7 14 1 0 l Trailers 1 1 Vacuum Cleaner Air Samplers Vacuum Pumps LCM's 1 3 2 3 0 0 0 Also, a great many miscellaneous articles and materials were decontaminated and returned to service. Materials which could not be decontam- inated were placed in barrels, filled with concrete, and dumped at sea. 6.4 Decontamination of Mack Tower Mack Photo Tower was subjected to radioactive fallout from several shots during the Operation, and many attempts were made to lower its radi- ation intensity. On 16 May the tower showed gammaradiation levels up to 5000 mr/hr, Using a fire truck mounted on a LCU, the fire department attempted to lower the radiation level to a permissible tolerance by pumping approximately 26