448 DANIELSEN 7 000 FT 6000 - | | T a AIRCRAFT NO, 2 ALTITUDE, 24,000 FT 5000 4000 3000 4-2 —| -30 — -35 —| -40 z = 2000 > Z5 1000 — -45 o 3Y 0 ; y wl 5 7000 T Ww = | | | | : < | & = = 6000 /_ AIRCRAFT NO.1 z - ALTITUDE, 21,500 FT O Z 5000 t- ac 4000 |— 3000 [— | —S — — —| 2000 -— 1000 }— o Le 1700 {| ~=—s-«1800=Ss«41900=—s 2000 L 2100 TIME, Z [ 2200 | 2300 -20 -25 -30 -35 -40 2400 Fig. 10—Temperaiure and accumulated radioactivity recorded by WB50 aircraft on Apr. 21, 1963. See Figs. 8 and 9. radioactivity trace, which has two steps, the first of which is the steeper. This suggests that the folding process extends to a smaller scale where it acts as a mixing process, A more complete exposition is available in a recently published report.! This report details many interesting aspects of Project Springfield which have been passed over in this presentation.