US military film surveying the physical damage to Hiroshima from late March through early April 1946. The domed building shown for the first few minutes is immediately below where the atomic bomb went off on August 6, 1945. Concrete structures immediately below atomic bomb blasts have a high chance of standing (the pressure is going straight down, whereas toppling happens when you have pressure from the side) — though they still get burnt and irradiated.
The river shown next to it was boiling over. People attempted to jump into the river to put out the fires on them, and boiled to death.You can see people walking around the town. By this point reconstruction was taking place. Notably, the bodies had all been buried, so the place looks "sterile" compared to how it would have looked immediately after the bombing.The videographer was most interested in how the buildings respond to the bomb. This is because at this point the United States had no other data points for the effects of atomic bombs on cities other than Hiroshima and Nagasaki.
There is an impressive panorama at 06:35. You can see people picking through the wreckage. At 7:25 you can see a street car that is up and running again.At 09:06 there is an amazing Torii gate that looks on to a wasteland of burnt, twisted trees.Unusual shot at 14:16; the camera is moving in an odd way.15:14 is an impressive panorama. Remember to look for that dome in the distance — that's where the bomb went off. Courtesy-RestrictedData