Kokura Arsenal

Fat Man was the Kokura Arsenal on Kyushu Island, but poor weather conditions led to the bombing of the secondary target of Nagasaki. This bomb exploded 1650 feet above the slopes of the city with a force of 21,000 tons (21 kilotons) of TNT. 

So the Target Committee sitting in Oppenheimer s office at Los Alamos under the modified Lincoln quotation that Oppenheimer had posted on the wall— this world cannot endure half slave-and half FREE—remanded four targets to further study Kyoto, Hiroshima, Yokohama and Kokura Arsenal. 

The following Arsenals are listed in the book of Tantum Hoffschmidt, listed here as Ref 7, p 38 Kokura, Tokyo, Nagoya, Heijo, Osaka, Chioda and South Arsenal. In the same book the Tokyo Explosives Plant is listed... 

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