During the last month of the development of the bomb, many preparations were made. The council that was in charge of the details was called the Interim Committee. The committee discussed many of the technicalities of dropping the bomb, including the necessary training of pilots; measure of radiation; hypothetical amount of destruction; and perhaps most interesting, the choosing of target sites.
The following is the excerpt from declassified reports of the Interim Committee on target sites.

Kokura Arsenal - This is one of the largest arsenals in Japan and is surrounded by urban industrial structures. The arsenal is important for light ordnance, anti-aircraft and beach head defence materials. The dimensions of the arsenal are 4100' x 2000'. The dimensions are such that if the bomb were properly placed full advantage could be taken of the higher pressures immediately underneath the bomb for destroying the more solid structures and at the same time considerable blast damage could be done to more feeble structure further away. (Classified as an A Target)

Niigata - This is a port of embarkation on the N.W. coast of Honshu. It importance is increasing as other ports are damaged. Machine tool industries are located there and it is a potential centre for industrial despersion. It has oil refineries and storage. (Classified as a B Target)

There were many questions raised in the dropping of the bomb. For example, while the committee agreed that the bomb should be dropped only on military areas, it would be impossible to destroy places without some loss of civilian lives. In addition, there were still those people who were seething over the destruction of Pearl Harbour, this meant that the dropping of the bomb could be seriously influenced by those who wanted revenge. Another dilemma was the damage to the environment. While the dropping of one bomb would not damage too much of the environment, the Interim Council was fairly certain that the use of atomic weapons would continue, therefore causing great harm to nature and possibly leading to fallout. Despite all the moral dilemmas, the bomb was still used on the Japanese cities. On August 6, 1945 the Enola Gay, a B-29 was escorted to the air space right above Hiroshima. At 8:15am, the pilot received conformation and released the world's greatest nightmare. At 8:16am, the results of the bombing were felt.