to ninety seconds or less. 78 > Later in the day the samplers would probably encounter intensities of five to twenty roentgens per hour, allowing them to remain in the cloud from thirty to forty minutes, case the crews received one or two roentgens. In either To protect the crews all sampler aircraft were pressurized, each carrying a special filter which prevented the entry of radioactive particles into the pressurization sys- tem. As a further safeguard should contamination escape this filter, all crew members were required to breathe one hundred percent oxygen dur~ ing and after sampling. masks. In effect, the crew members were wearing gas Lead vests were furnished to crew members to decrease the amount of radiation reaching the body's vital organs. Finally, all aircraft attract, or act as a collecting agent for radiation. To avoid picking up contamination, a platform was constructed and placed on a fork lift to serve as an elevator for pilots leaving the aircraft. On the B-36's, crews were given gloves and instructed to use extreme care in exiting ‘through the crew hatches. The aircraft were then isolated to allow the radiation to decay for approximately 48 hours. Next, they were placed on either the decontamination pad or wash rack and thoroughly washed and scrubbed with a combination of detergent, kerosene and chemicals. wards they were given a fresh water rinse. After- This process was continued until the cockpit reading was approximately 25 mr per hour, No flying was permitted until the cockpit level was reduced to this figure. De- spite the above precautions, crew members frequently had small amounts of contamination on their clothing and the exposed portions of their body. These men were processed through the personnel decontamination center, AFWL/io 6s