Nagasaki 9Aug45 |
"Fat Man" |
US B-29 Superfortress Bockscar and crew |
The atomic bomb "Fat Man" was dropped on Nagasaki 9Aug45 by the US B-29 Superfortress Bockscar [pictured with crew below]. It was modeled on "the gadget", the very first experimental atomic bomb detonated just a month before at the so-called "Trinity test"* in Socorro, New Mexico. The mushroom cloud resulting from the nuclear explosion over Nagasaki [above] rose 18 km (11 mi, 60,000 ft) into the air from the hypocenter. 80,000 were killed, half on the first day.
"Joe-1" |
So porous was the security at the Manhatten Project where all the intense work was done to accomplish the deed, that the first Soviet bomb, RDS-1 (a.k.a. "Joe-1" in reference to Stalin) was almost a direct copy, even in its external shape, of the US-developed Fat Man bomb. It was test-exploded a mere 4 years after the Nagasaki drop in Aug49.
Theodore Hall (1925-99), one of several physicists working at the time on the Manhattan Project eventually fessed up some 50 years later to divulging critical intelligence to the Soviets. He believed strongly (along with others, some caught much earlier, and executed for their deemed treachery) that an American monopoly on nuclear weapons was dangerous. He explained it this way in 1998, just before he died:
"I decided to give atomic secrets to the Russians because it seemed to me that it was important that there should be no monopoly, which could turn one nation into a menace and turn it loose on the world as ... as Nazi Germany developed. There seemed to be only one answer to what one should do. The right thing to do was to act to break the American monopoly".
-------------------------------------------------------------------------------------
* This rare photo was taken at ground zero of the Trinity test site, after the bombing of Hiroshima and Nagasaki, and some time after the actual test. Oppenheimer, the so-called father of the atomic bomb, appears at the center in a light colored hat: