xT problem of attaining cleaner surfaces on sampling aircraft be investigated, His ideas proposed that having the surfaces of the anticipated sampling B.57 aircraft painted or permeated with a protective substance at the factory might be an answer to the contamination problem, So he wrote to the Deputy Chief of Staff, Operations, ! re « « A rough dirty surface allows a large mild-up of contamination material with a proportional increase in the background radiation to which the pilot is subjected on the return flight, We have attempted to work this problem in the past by use of acid brightener and hand polishing of aircraft. A prodigious number of man hours of labor have gone into the F-8)G aircraft which this center has utilized for sampling. The amount of personnel exposure collected in the cloud was roughly proportional to the sample collected on the filter wit, Any exposure which the pilot absorbs on the return flight due to aircraft background is wasted radiation (absorbed by pilot), Because of the large samples currently being required by Eos Alamos, and the restrictions placed upon the total dose allowed each pilot, it is necessary to use any and all means of economizing on radiation absorption. Then he suggested having the sampling B-57 aircraft treated at the factory, But Colonel Houghton's suggestion apparently did not prove feasible, as the decontamination of aircraft continued to be a problem, The detailed instructions for decontaminating an aircraft revealed to some extent the many attempts to reduce the work involved, (a) Retdrming aircraft (air sampling, cloud tracking, and ground survey) taxied by flight crew to the end runway and spotted as directed by designated member of decontamination crew, adjacent to aircraft decontamination area, (bo) Flight crews made de thei their exitit according ding to to "SOP" es established e by 233 SWEH -2-0034, 45+