 The danger to electronic systems on the ground from electromagnetic pulse was not considered to be significant from the sub-kiloton blasts proposed since solid-state integrated circuits were not in general use at the time.From many smaller detonations combined the fallout for the entire launch of a Orion is equal to the detonation of a typical 10 megaton (40 petajoule) nuclear weapon as an air burst, therefore most of its fallout would be the comparatively dilute delayed fallout.Assuming the use of nuclear explosives with a high portion of total yield from fission, it would produce a combined fallout total similar to the surface burst yield of the "Mike" shot of Operation Ivy, a 10.4 Megaton device detonated in 1952.