OPERATION IVY DATE: TIME: PPG time 16 Nov 1952 1130 King Sponsor: GMT 15 Nov 1952 2330 SITE: LASL PPG - Reef northeast of north end of Yvonne 12° 33' 162° 21' TOTAL YIELD: Site elevation: 500 kt FIREBALL DATA: Time to lst minimum: Time to 2nd maximum: Radius at 2nd maximum: CLOUD TOP HEIGHT: CLOUD BOTTOM HEIGHT: 4k" o9" 62 to 70 msec 700 to 850 msec 1,968 ft HEIGHT OF BURST: CRATER DATA: N E Sea level 1,480 ft No crater TYPE OF BURST AND PLACEMENT: 67,000 ft MSL 51,800 ft MSL Air burst over coral soil and sea water REMARKS: Contamination of the islands of Eniwetok atoll was generally masked by the contamination resulting from the earlier Mike shot. The dose rates indicated in figure 102 are estimates based upon readings taken from helicopters flying 25 feet above the ground. The estimates are corrected for dose-rate levels existing on D-1l. 56