If I remember correctly, there were four built.
1. Trinity (gadget)
2. Hiroshima (little boy)
3. Nagasaki (fat man)
4. Not detonated (unnamed and not 100% completed when the first two were dropped)
They were going to be ready for the third bomb to be dropped in the third week of August. They also were going to be able to drop 3 in September and another 3 in October.
I'm not saying in any way we should have leveled Moscow, but that we did have more coming if needed.
Okay. It was a comment I remember from a military history professor. I may have misunderstood a little.
