Frequent estimates are that 140,000 people in Hiroshima (39% of the population) and 70,000 people in Nagasaki (28% of the population) died in 1945, though the number which died immediately as a result of exposure to the blast, heat, or due to radiation, is unknown.
Large numbers of the population walked for considerable distances after the detonation before they collapsed and died. Large numbers developed vomiting and bloody and watery diarrhea (vomitus and bloody fecees were found on the floor in many of the aid stations), associated with extreme weakness.
The death tolls of both Hiroshima and Nagasaki are complicated by the protracted impact of nuclear fallout. While many were killed instantly by the blasts – it’s estimated that roughly half the deaths in both attacks occurred on the first day – many more died as a result of radiation sickness and other injuries, long after the detonations.
The Atomic Bombings of Hiroshima and Nagasaki by The Manhattan Engineer District, June 29, 1946. Total Casualties. There has been great difficulty in estimating the total casualties in the Japanese cities as a result of the atomic bombing. The extensive destruction of civil installations (hospitals, fire and police department, and government agencies) the state of utter confusion immediately ...
The Hiroshima prefecture health department released many reports about deaths. According to reports, most of the people in Hiroshima and Nagasaki died in first day of bombing. Main reason caused deaths was flash or flame burns by %60. Also many people died in falling debris. According to reports, it’s %30. %10 of people died in other reasons.
A total of about 185,000 people died in the Hiroshima and Nagasaki bombings and their immediate aftermath. Of these, around 110,000 died instantly, and the rest died within days of trauma and radiation sustained in the bombing.
Some estimates are that 140,000 people in Hiroshima (38.9% of the population) and 70,000 people in Nagasaki (28.0% of the population) died in 1945, but how many died immediately as a result of exposure to the blast, heat, or due to radiation, is unknown.
It seems almost certain from the various reports that the greatest total number of deaths were those occurring immediately after the bombing. The causes of many of the deaths can only be surmised, and of course many persons near the center of explosion suffered fatal injuries from more than one of the bomb effects.
For a detailed timeline of the bombings, please see Hiroshima and Nagasaki Bombing Timeline. Hiroshima. On August 6, 1945, the United States dropped an atomic bomb on the city of Hiroshima. The bomb was known as "Little Boy", a uranium gun-type bomb that exploded with about thirteen kilotons of force.
On August 6, 1945, an American B-29 bomber named the Enola Gay left the island of Tinian for Hiroshima, Japan. The uranium 235 gun-type bomb, named Little Boy, exploded at 8:16 a.m.In an instant 80,000 to 140,000 people were killed and 100,000 more were seriously injured.