mention was made by the pilot who penetrated at 50,000 feet. He rep- orted slight turbulence upon first entering the cloud, but none thereafter. The data presented in the foregoing paragraphs is summarized in the attached Table. 2,¢6-1, The spare aircraft measured the maximum dimension of the cloud with the following results: TIME #35 to Al £45 to £52 #47 to £49 MAXIMUM WIDTH INDICATED ALTITUDE 42 miles 45 miles 50,000 to 55,000 feet 50,000 to 55,000 feet 14 miles 42,000 feet DIRECTION E to W =NtoS NtoS Preliminary analysis of the contamination study indicates that the results will agree with those of Operation TEAPOT. More detailed infor- mation on the contamination study will be presented in the interim test report. COPIED/DOE LANL RG au 4