" " " ' " " 1330 " 23, 000 9, 000 " " 2220 MST " * 5/13/54 B-29 271 L 20eR In . papers. However the collecting plane flew at ~ 9000‘ and sempled at ~ 5-10 houra after burst, was a fallout tracker and probably No flight data are available on these two penetrations, west of lateral center, Semple taken 50-100 nautical miles 7 “opIED/DOE LANL RC ~ Sannin" <== ag UL will be forwarded at your request. If any of these is desired, they The time listed in this column represents the mean time of collection. In some cases, papers are available which contain debris collected at ground level during longer periods of time. **actual duration of collection was about one hour, True altitude is actually higher than this by about 2000 ft in the 40,000 to 45,000 rt , \ ke center of cloud, . Pen Sample taken at approximate lateral wa ; range and about 2500 ft in the 50,000 ft altitude. The main cloud fram the above five shots based at about 35,000 ft so samples taken above thia altitude represent debrie in the mushroom itself and samples taken below ~ 35,000 ft represent either debris in the mushroom stem or fallout from the main cloud, Collection altitude figures are pressure altitude readings. 5351 mt 335L Out 5/13/54 1540 " 51,000 B36 ‘ 1430 MST ' 4/25/54 39, 000 " 1086 R 033L 1083 LL 1110 MST 1900 1720 MST 1400 1545 1645 1350 " 3/26/54 " 38, 000 25,500 1630 MST 1655 4/25/54 " " 't ens . 1130 MST . ” Td 2/28/54 . 50, 000 515500 37,000 ha, 500 36,500 ft Altitude* 51,200 3/26/54 " ut " \ 1145 MST 2/28/54 oO " > . O45L B-29-L 2086 (L. upper) 1083 o3aL O43L o38L ; _2ue 03730 * Castle Castle-4 Castle-2 Castle-l OUWpAc iunueS AL