E. What specific activity of a particle of fallout would be required to deliver the saze dose in the sane length of tine? The ansver to this question depends upon the tine after detonatics that the particle comes in contact with the skin, Assuning this tine to be 143 hours, the specifis activity wuld have to be about 150 pe for the same sise particle. Since the particle may be washed off before six days have expired, one nay consider the problem ancther vay, What must be the specific activity of a particle et B/3 hours te deliver this dose in the next 24 hours? . | hecording to Strandquist (p. 2), only about 70% of a six day dose need be delivered in one day to produce the seme affect (erythena). Accepting this, then a particle with sbout the sane activity (160 ne) at EY 3 hours would be sufficient to deliver an erythema dose {n one day.