Note the signatures on the tail assembly and the "bomb" on the worker's shirtįat Man is lowered on to a transport dolly for the trip to the airfield. The Fat Man bomb being towed toward the airfield with an escort Norman Ramsey signing his name on Fat Man The assembled implosion sphere for Fat Man ready to be placed in the casing Little Boy has been successfully lifted into the bomb bay and is being attached to sway brackets that will keep it secure It exploded 43 seconds later with a blast yield equivalent to 21 kilotons of TNT at an altitude of 1,650 feet (500 m), approximately 1.5 miles (2.4 km) northwest of the planned aiming point, resulting in the destruction of 44 of the city. Little Boy is lifted via a hydraulic lift into the Enola GayĪ view from underneath the hydraulic lift, in the bomb bay Bockscar visually dropped the Fat Man at 10:58 local time. Little Boy ready to be loaded into the Enola Gay Little Boy ready to be lifted into the Enola Gay But once upon a time, you flew a plane called the Enola Gay over the city of Hiroshima, in Japan, on a Sunday morning Aug and a bomb fell.
Manhattan Project scientists and military personnel gather around the bomb pit, ready to watch the Little Boy bomb being loaded into the Enola Gay Little Boy, covered by a protective tarp for security reasons Dropped on the Japanese city of Nagasaki on August 9, 1945, it was the second nuclear weapon used in a war. In the implosion-type device, a core of sub-critical plutonium is surrounded by several thousand pounds of high-explosive designed in such a way that the explosive force of the HE is directed inwards thereby crushing the plutonium core into a super-critical state. The first was the "Gadget" detonated at the Trinity site on July 16, 1945. "Fat Man" was the second plutonium, implosion-type bomb.