unfractionated debris by Freiling, Crocker and Adams (Fr64), which did not include neutron-induced nuclides. In the calculations of the compositions of Harry and Smoky fallout, only two neutron-induced nuclides contributed more than 1% to the external gamma-ray exposure, namely, 239Ny from 1 to 15 days, up to 20%, and 609 from 2 to 15 years, up to 10%. A check of the Nevada Test Site data for 25 Events (tower shots, balloon shots, and air bursts) showed (though not for every Event) that contributions of more than 1% to the total gamma-ray levels were due to only three neutron-induced nuclides, 60¢, 237 and 232M CURIES OF FISSION PRODUCTS PER KILOTON OF FISSION YIELD From information given by Glasstone and Dolan (G177, p. 390), one can deduce that 1 kiloton of fission produces about 1.5 x 10’ curies of fission products 24 hr postshot. should be considered as an update. Table 1. The calculation in this work The calculations are summarized in