PRIVACY ACT MATERIAL REMOVED Memo to D. Froman, 6/10/48, subj: The X-Ray Operation. payee A a (Page 2) “Radiation Burns of J-2 Personnel" (Cont'd) The X-ray operation was performed by two radio- chemists who were to accompany the samples to Los Alamos, (BR. W. Spense and James Gilmore) and by myself, and Each of us performed eachpart of the operation during the course ofthe collection. The sequence of events was as follows: 1. Drone plane landed and was pulled into revatuent by Air Forces personnel, . 2, Top filter unit removed. In thisoperationa the lanyard vas pulled by a rafiochenist and the special lift operated by Air Forces personnel. Radiochamists lifted the filter unit from the special lift to the ground. 3. hk. The top filter unit was &isassembled by a reAfochanist and the filter paper holders removed from the filter unit, The filter paper vas removed from the paper holders, the filter paper was held in the tongs while an loniration chamber reading was taken and then transferred to the lead container, 5. All personnel waited until the next plane had Landed and then repeated these operations. ae a i Ne ar i58 After the last planes had landed and the s peer removed from the top unit the bottom filter units were ronoved from all of the planes and the filter paper collected. eee Gg ne ea ee TARR a During the course of these operations, dosimeters worn by each man Were read freyuently to establiah which operation gave the greatest exposure. It was found that pulling the lanyards on the planes to release the filter unites gave the highest exposure, ths next highest exposure vas obtained in removing the filter paper holders from the filter units themselves. The next highest exposure was obtained in transferring the filter units fran the special lift to thse ground, and the least exposure vas obtained in collecting the filter paper from the filter paper holders. However, it should be enmrhrtized that tongs wsre always used during this last cperation on X-ray day. Gloves were carried by the Los Alamos group for use during thsee operations. However, the Rad Safe unit also bad gloves available and thase were used. Each man usually changed gloves after he had worked with two or three planss,. ss The Yoke Operation. Gilmore during the yoke operation. as for X-ray. _ COPIED/DOE Page 2 .and Kr, Warren replaced Spence and Otherwise, the personnel were thse sams ‘ A . \ \ PRIVACYACT MATERIA L REMOV7 ED }