personal decontamination personnel, (c) A rough survey of each incoming aircraft was made to determine extent and degree of contamination. Should the average contamination level be above 20 milliroentgens the aircraft was allowed to "cool" to this level if time allowed, (d) Prior to decontamination, aircraft was towed to designated washing area, Subject area was selected so as to avoid secondary contamination of other aircraft or personnel, (e) A detailed exterior survey of aircraft was made prior to application of any decontamination operation, Results were recorded on appropriate forms or sketches and showed beta plus gamma and gamma readings. (f) The same survey was made and recorded for each crew position. The first washing was made with decontamination trucks using water and detergent ratio of 1-pound the 100 gallons of water, (g) The monitoring procedures outlined in paragraph e again repeated, (h) The secondary washing (if required) consisted of a mixture of one part "gunk" and three parts kerosene followed by a water detergent rinse, (i) The monitoring procedure repeated. (3) If time _permitted and, if advisable, a final washing utilizing water and detergent mixture (1 pound the 100 gallons water) was applied. The techniques were time-consuming and required great care, (a) All personnel entering the boundaries of the aircraft decon- tamination area processed first through the personnel decontamination 23k AFWL/HO SVEH -2-0034, nS? g