2 : December 1959 TL . p 7 . | exw ORL In the test evaluation section there is an entry onthe - one point test in December 1°57 where enalysis of the core drillin:s obtained long after the event have just been completed. The resutt is a refinement of the zield a e calculation and the conclusion that such sampling even lon: ofter a test has great diagnostic value. The section on undergrounc test consealment states “present theoretical predictions of the seismic decourlins to be achieved by detonating an explosive in an underground cavit; depenc quite criticelly upon the interpretation of the plastic motion observec on pest underground exnlosions. The areas of misunderstanding or lack oF Hnoviest.-e th investigated and it is expected that there will be an im of these phenomona from certain calculations. Further one-tenth scale tests have been preformed in the cylindars with hemis- usable end containable within thisconfiguretion. + ca pherical end caps to attempt to understand tne cest des and maximum yield The week 2 the ends and filling those hemispheres with salt makes tnis er S seem to pe

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