+ ar SOT ‘ dosages. This was probably duc to the harmful effect of the enclosed containers in which the swine were cxposed at shot time. Clinical studies made of animals that sustained more than lethal dosages indicated the essential similarity of radiation injury in man and large.animals. One of the most significant pathological findings 3 was the evidence of early radiation injury to the intestinal membranes, | nary cvaluation shows that serious blast and radiation injurycan be expected out to about 1000 yards. For a more detailed discussion of Program 2.0, see Appendix "B". 9. PROGRAM 3.0 — STRUCTURES a. The broad objectives of this program were to test ucthods of analysis which had been developed before the tests to provide predictions of damage to struc tures from atomic blast. Such methods will be used for predicbing target damage for offensive operations and for preparing designs of structures to minimize damage in defensive operations. In order to carry out these objectives of the Army, Navy and Air Force, a well rounded program of tests on 26 buildings of various types and dosigns was conducted. In gencral, buildings wers: dusignud and planned so as to suffer some deformation, yet not fail completcly, This goal was rather well met although a few structures collapsed and others had considerably less damage than had been predicted. An essential part of the program wus the measurement of blast pressures «nd structural behavior by clectronic recording, by motion picture photography and a complete survey of damage after the tests, Useful data were obtained from 95% of the transicnt measurements, wich is an outstanding achievement. Since a large mass of data must be studied, final resulls will not be available for some time. The Public Buildings Service sponsored & program of tests on windows, glazing and methods of stopping glass fragments for the Federal Civil Defense Administration, which should provide useful information. A fcw tentative conclusions may be stated as follows: (1) Results of Limited analysis with measured pressures on the building indicate that they behaved generally as predicted. The chief problem is the prediction of the pressures on the various parts of the buildings as the wave passes over them. (2) Current shelter dosigns cf the Corps of Enginvers offered adcauate protection against the effects of the 50 kiloton burst at 17/00 Feet from the 306 foot tower. to a 1 d to . This distanc 7 7 ea was sclecte provide the sameC pressure as that Tha ee “8 ae °