有关投放第三颗:Letter from General Groves to Marshall

Letter from General Groves to Marshall dated August 10:

The next bomb of the implosion type had been scheduld to be ready for delivery on the target on the first good weather after 24 August 1945. We have gained 4 days in manufacture and expect to ship from New Mexico on 12 or 13 August the final components. Providing there are no unforseen difficulties in manufacture, in transportation to the theatre or after arrival in the theatre, the bomb should be ready for delivery on the first suitable weather after 17 or 18 August.