ALTITUD! E (MSL) 70,000 60,000 80,000 40,000 30,000 20,000 oOo 10,000 = 80,000 m 80,000 of“FFIISSS SSG Rp RRP eet ee 100,000 mim 110,000 <£ Zutz 120,000 FEET DPRpHLe pe eT PRpeee fl RADIOACTIVE FALLOUT AND ITS EFFECTS ON MAN BRAVO Ficure 1.—Upper winds at shot time. Arrows blow with the winds, and barbs indicate wind speed ; full barb, 10 knots; one-half barb, 5 knots. 101488