![Nagasaki Fat Man bomb Harold Agnew](https://static-ssl.businessinsider.com/image/55518c80eab8eaf776915edc-1200-1000/light-24.jpg)
Harold Agnew carrying the plutonium core of the Nagasaki "Fat Man" bomb in 1945.
Weighing 14 pounds and responsible for $4, the heart of the "Fat Man" atomic bomb was detonated on August 9, 1945, over the Japanese city of Nagasaki.
Fat Man was the second nuclear weapon to be deployed in combat after the US dropped a 5-ton atomic bomb, called "$4," on the Japanese city of Hiroshima.
Japan surrendered to Allied Forces, effectively ending World War II, three days after the US deployed "Fat Man."