1945
The US made atomic bombs from 1945 to 1992.
1945
August 1945
1945
Absolutely, by a minimum of at least a year.
By the end of Operation Crossroads in the summer of 1946, the US had built a total of 9 atomic bombs and detonated 5 of them, leaving only 4 in the stockpile. Records obtained by the Bulletin of the Atomic Scientists suggest that by the end of 1946 the US had built 5 more atomic bombs, ending the year with 9 in the stockpile.While the Hanford reactors had a design capacity of 3 atomic bomb cores every month, its very obvious that they were being operated far below capacity through 1945 and 1946 to minimize neutron irradiation damage to the graphite moderator and/or shutdown for repairs frequently.
1945. I cannot be more descriptive since the question asks for the year and there you have it. The year-1945.
At this time (2012) neither the US or Russia makes any. Other countries may be making small numbers.
The two atomic bomb attacks on Japan were in August 1945 (the 6th and 9th, to be exact).
It was December 8th 1941 when the US dropped the bombs on Japan.
yes, or the war would have lasted more than a year longer.