Reconstruction from pre-raid air cover of the scene, in vicinity of the Otake Group Office. (the small building on the corner to the left of the large sheet). Most of the men were protected from the heat rays by the shadow of the building which is shown roughly as cast by the bomb which exploded above a point just over 1000 meters away . A few were burned who wereat the left end of the sheet where the shadows are short. More than 50% of the others died of the effects of radiation.