Information about the city of Hiroshima in World W

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History
The city was heavily damaged in World War II by the nuclear weapon Little Boy,which was the second such device to be detonated,and the first ever used in military action.The US government has claimed that the American atomic attack on Hiroshima and Nagasaki was the major factor leading to the surrender of the Japanese Government several days later--the claim is highly controversial.
During World War II,Hiroshima was a city of considerable military importance.It contained the 2nd Army Headquarters,which manded the defense of all of southern Japan.The city was a munications center,a storage point,and an assembly area for troops.To quote a Japanese report,Probably more than a thousand times since the beginning of the war did the Hiroshima citizens see off with cries of 'Banzai' the troops leaving from the harbor. On the other hand,it was not considered important enough by the U.S.to have been targeted for significant bombing prior to August 1945.
The center of the city contained a number of reinforced concrete buildings as well as lighter structures.Outside the center,the area was congested by a dense collection of small wooden workshops set among Japanese houses; a few larger industrial plants lay near the outskirts of the city.The houses were of wooden construction with tile roofs.Many of the industrial buildings also were of wood frame construction.The city as a whole was highly susceptible to fire damage.
Some of the reinforced concrete buildings were of a far stronger construction than is required by normal standards in America,because of the earthquake danger in Japan.This exceptionally strong construction undoubtedly accounted for the fact that the framework of some of the buildings which were fairly close to the center of damage in the city did not collapse.Another is that the blast was more downward than sideways; this has much to do with the survival of the Prefectural Promotional Hall (pictured),which was only a few metres from the aiming point.(The ruin was made a UNESCO World Heritage site in 1996[1] over the objections of the US and China.[2])
The population of Hiroshima had reached a peak of over 380,000 earlier in the war but prior to the atomic bombing the population had steadily decreased because of a systematic evacuation ordered by the Japanese government.At the time of the attack the population was approximately 255,000.This figure is based on the registered population,used by the Japanese in puting ration quantities,and the estimates of additional workers and troops who were brought into the city may not be highly accurate.
Hiroshima was the primary target of the first U.S.nuclear attack mission.The mission went smoothly in every respect.The weather was good,and the crew and equipment functioned perfectly.In every detail,the attack was carried out exactly as planned,and the bomb performed exactly as expected.
The bomb exploded over Hiroshima at 8:15 on the morning of August 6,1945.About an hour previously,the Japanese early warning radar net had detected the approach of some American aircraft headed for the southern p