and barreled the resultant liquid for analysis by radio chemistry scientists. 15 During Operation IVY, a pilot recorded these sensations as he penetrated the MIKE cloud, _, sampler Element Commander, led the first flight of four samplers, code name RED flight, and was first to enter the towering MIKE cloud. The bottom of the flat part of the mushroom-shaped cloud was estimated at 55,000 feet by the "Sniffers." So, RED flight could only enter the stem of the mushroom, The first penetration was made at near maximum altitude of 12,000 feet. _ was vectored from directly over the B-36 Controlaircraft to enter a small segment extending from the stem of the cloud at approximately H plus one hour forty minutes. He and his wing man turned and flew toward the cloud for 15 minutes before making contact with it. Apparently the°cloud was so massive that, although the controller aircraft seemed ‘to be quite close to it, it was approximately 100 miles away. Upon ~ entering the cloud, each pilot was going to be well occupied, First he had to fly the airplane on instruments, Then he had three radiatio instruments to watch, remembering critical informatio so that he could report it to the we scientists in the control ship and jot it down on his‘report sheet. And he had a stop watch so that he could time his'- stay in the radiation over.one roentgen in intensity. ~~ Immediately upon entering the cloud, RED EZeader was struck by the. redness of the cloud, cockrit. It cast a red glow all over the His rad-instruments "hit the peg." There was no way of knowing how much hotter it actually was than the capacity of his instruments. The hand on the integron which showed the rate at which radioactivity was being accumlated, “went around like the sweep second hand on a watch . . . And I had thought it would barely movej" Seeing “everything on the peg" and the red glow like the inside of a red hot furnace was staggering and quickly made a 90° turn to leave the cloud. When he came out, his stop watch showed that he had spent five minutes in radiation over one roentgen, He reported to "D0G-2," the Control B-36, collected his wing men and then it was time for RED-3 and *RED-b to enter the cloud. RED Leader cautioned them not to go in too far and they disappeared into the cloud. Apparently fromsubsequent events, RED-l, ’ "21h apwlHo spun out SWEH -2 -003); a 4 | et