Pretty sure the U.S. was building nukes basically non-stop once they started.
The time traveler thing to do would be to tell Stalin how to make sure the USSR stays on track (and doesn't split from China) after he dies, tell FDR to resign when Henry Wallace was his VP (or at least fight to keep him on the ticket), and give Churchill one of those cigars the CIA tried to give Castro.
Neat source; I'm going to have to read through all that later.
I think the first few bombs took a long time to produce (we'd produced at least three in 1945, counting the Trinity test), but then we kept up a steady pace and ramped up production soon after (at least nine in 1946 by this source).
Pretty sure the U.S. was building nukes basically non-stop once they started.
The time traveler thing to do would be to tell Stalin how to make sure the USSR stays on track (and doesn't split from China) after he dies, tell FDR to resign when Henry Wallace was his VP (or at least fight to keep him on the ticket), and give Churchill one of those cigars the CIA tried to give Castro.
https://www.tandfonline.com/doi/pdf/10.2968/066004008
I'm assuming the 2 in 1945 were the ones they used (and not the remaining inventory), but I'm not 100%.
Neat source; I'm going to have to read through all that later.
I think the first few bombs took a long time to produce (we'd produced at least three in 1945, counting the Trinity test), but then we kept up a steady pace and ramped up production soon after (at least nine in 1946 by this source).