>. UNULASSIFIED ° ane representatives, it was considered advisable to include coliective protectors in the larger Corps of Fngineers! dug-outs, Lr. Bernard Siegel of the Chenical Corps, Edgewood Arsenal was given responsibility for this collective protector program, and it was considered desirable that he also take over the cascade impactor project at Fniwetok. In the meantime Mr, Lanier and others at Edgewood proceeded with the mamfacture and calibration of the cascade impactors, Aerial Crater Survey. On 27 October 1947 the Bureau of Aeronautics requested approval of a project to measure the contamination of the crater by means of aerial survey. This was initially turned down as being impractical, but after discussions among Commander Bliss, Buder, Colonel Cooney, Captain Russell, and Dr. Scoville it was agreed that such a survey could be made and would be desirable in the interests of radiological safety. This experinent was therefore incorporated in the projects assigned to the Radiological Safety Group, Arrangements were made to obtain a C-47 on ZERO day and a helicopter on later days for use on this project. This project was of special interest to Lt, Comir, Elmer R. King, MC, USN, of the Bureau of Medicine and Surgery, who had been largely instrumental in the planning of this experiment and who would play the principle role in executing it, Gamma Radiation Exposure, . One of the most important projects under the cognizance of Task - Group 7.6 was the measurement of gamma radiation in the open and in shielded positions. The only feasible method of making these measure- ments on a large scale was by means of film badges. These had been a~ 2h = * . nad eetake * : rv ‘} a gabe . 7 “{ . ~ ce Wet “wry tt TD ee ee a wo . et fg moo, PUR NR eet ee . . ‘ . Poa eka ine iSSR I rears eneen ing ee toe . "ey det ie .ORL, - 03 ' om L oe &. ov oy. re NO ‘AA yt. ‘ 5 “te Vogts eR eet te ren pe Lo ro fe 2 a Ce fz SIS 4 ST 7 pe ie: “Yee es . + Na . i ee” eos 27 ff i : " Dace oe A: ~