Keywords: Operation Plumbbob - Diablo 2.jpg en PLUMBBOB/DIABLO - 07/15/57 - Ionization glow surrounds the cooling fireball of the DIABLO shot fired in Yucca Flat at 4 30 a m Monday July 15 1957 74-OTI-7-15-57 437 PLU-57-060 Photo courtesy of National Nuclear Security Administration / Nevada Site Office 1957-07-15 PD-USGov Plumbbob Diablo |