![]() ![]() ![]() The only surviving objects were the frames of a small number of strong reinforced concrete buildings which were not collapsed by the blast most of these buildings suffered extensive damage from interior fires, had their windows, doors, and partitions knocked out, and all other fixtures which were not integral parts of the reinforced concrete frames burned or blown away the casualties in such buildings near the center of explosion were almost 100%. The central portions of the cities underneath the explosions suffered almost complete destruction. The number of casualties which resulted from the pure blast effect alone (i.e., because of simple pressure) was probably negligible in comparison to that caused by other effects. The gamma radiations emitted by the nuclear explosion did not, of course, inflict any damage on structures. No casualties were suffered as a result of any persistent radioactivity of fission products of the bomb, or any induced radioactivity of objects near the explosion. ![]() Radiation injuries caused by the instantaneous penetrating radiation (in many respects similar to excessive X-ray exposure) from the nuclear explosion all of these effective radiations occurred during the first minute after initiation of the explosion, and nearly all occurred during the first second of the explosion. Mechanical injuries caused by collapse of buildings, flying debris, and forceable hurling - about of persons struck by the blast pressure waves.ĭ. Burns resulting from the fires caused by the explosion.Ĭ. "Flash" burns, caused directly by the almost instantaneous radiation of heat and light at the moment of the explosion.ī. The casualties sustained by the inhabitants of both cities were due to:Ī. Spread of the original fires (B and C) to other structures. Secondary fires, i.e., those fires resulting from the collapse of buildings, damage to electrical systems, overturning of stoves, and other primary effects of the blast.ĭ. Primary fires, i.e., those fires started instantaneously by the heat radiated from the atomic explosion.Ĭ. Blast, or pressure wave, similar to that of normal explosions.ī. The damages to man-made structures and other inanimate objects was the result in both cities of the following effects of the explosions:Ī. Even under such circumstances, self-sacrificing relief activities continued.Both the Hiroshima and the Nagasaki atomic bombs exhibited similar effects. Despite these efforts, however, fatalities increasedīecause there were so many injured that surviving doctors and nurses could not provide sufficient treatment, and because of the lack of medical supplies. Meanwhile, relief trains transported the injured to the Isahaya and Omura districts. National schools(now primary schools) functioned as aid stations for the many injured persons who were brought there. Many relief teams came to Nagasaki from other parts of Nagasaki Prefecture, as well as from various parts of Kyushu. The College was the most adequatelyĮquipped medical institute in Nagasaki City at that time. Notably, the Nagasaki Medical College, located about 500meters from the hypocenter, was seriously damaged. They were burned down by the fires caused by the heat rays, or severely destroyed by the blast, killing or severely injuring many people. In the area close to the hypocenter, buildings with no shield in its surroundings, were more likely to be destroyed. ![]()
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