214 OTHER MAJOR ACTIVITIES PARAMETERS DEPT SEDAN ONY BOY AOPARERT CRATER TRUE CRATER VOLE CRATER 323 soe sex ee 26 ro TER APPARENT CRATER 1220 26° VISIBLE CRATER INITIAL CAVITY etLow | RADUS Bee rd 17S zag 7 w TRUE CRATER i220 » : we Li? MEMHT FALLBACK UPLIFT FLIPOVER vouumes APPARENT CRATER TRUE CRATER VISIBLE CRATER BULK FACTOR APPARENT CRATER WOAUME PER KT x iv iz" x TO Nene ~ €,560000— 33,800~* 13,918,000—TaBBO ya? 7,800,000)8° 68,700p0 1% 208 65,S00nt'Aa TASGOye’Kt Sedan and Danny Boy. ~ DANNY BOY One of the primary Plowshare objectives of Sedan and Danny Boy experiments at the Nevada Test Site was to determine the cratering characteristics of nuclear explosions in alluvium and basalt, respectively. As is shown on the schematic, with the exception of the lip configuration, the Sedan and Danny Boycraters are quite comparable. Apparently, the difference in rock types had very little influence on the resultant craters. The Sedan experinient was conducted at the Nevada Test Site on July 6, 1962, and the Danny Boy event on March 5, 1962. Danny Boy Post-shot exploration of the Danny Boy (0.4 kiloton militaryetfects cratering experiment in basalt at the Nevada Test Site on March5, 1962) crater was undertaken and completed during 1963 by the Corps of Engineers’ Nuclear Cratering Group. Data were accumulated on the stability of the Danny Boy crater slope, the suitability of the

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