a intereactions and attenuations and come up with an estimate of how much attenuation you get that nowhere had anybody taken theee calculations which had been done independent= ly by many physicists and made them evailable in handbook form so that an architect can say, "I've got a cellar which 4s so wide and so narrow and has such and euch height. * Here's a super structure in pounds per square foot and you can calculate from that how much attenuation you could expect, At the same time Commissioner Libby, we suspect with his tongue in his cheek, asked that we undertake a atudy of what the Commission's installations could ao in order to protect themselves against fallout, ZI think he had in mind not so much what the Commission could do for itself, but rather development of information which could be used more generally, Because obviously, if we could help our own installations in this way, then all of industry and the others all over the country can use it, What Mr, Breslin undertook was a sort of a feasibility study to see whether it would be possible to reduce the information that had been accumulated out in the field into 154

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