», A(15200 Project 23,1 = Fireball and Bhangmeter - H. Grier D, J, Barnes FIREBALL Preliminary firebull yields have been computed from four high speed Eagtman films, one each from Parry and Mack and two from Piiraai, with the following results: Parry Mack Piiraai x Piiraad The preliminary fireball yield is 3 y DELETED = An ambient air density of 1.12 grams/liter has been assumed for these calculations. BHANGMETER Four Bhangmeters at the control point gave time to minimum oesEre? vELETED