This is at time t=0.00005 sec (or something like that) - it gives you a sense of just how close this bomb was when it exploded. The only buildings standing were made of concrete. Thank you for granting use for non-commercial use. I'm in Hiroshima over the weekend for business and wanted to show the blast diorama to the folks back home. It's a powerful image. Mark Benjamin Sunday, February 11th, 2007 at 04:22:03