Fat Man & Little Boy
By: Dan Nemeth
What is the Fat Man & the Little Boy
► They were the first two nuclear bombs ever
used in history.
► Both were constructed by the Manhattan
Project in 1945, and used against Japan
► Believed to be the cause of Japan
surrendering on August 12, 1945.
Quick Overview of the Manhattan Project
► The Manhattan Project was the project to develop the
first nuclear weapons during WW2 by the United States,
United Kingdom, and Canada.
► It was a project that took place between 1942-1946 under
the control of the US army corps engineers.
► It was a successful by creating three nuclear bombs: first
one was a test detonation of a plutonium bomb known as
“the Gadget” was called the Trinity test on July 16th.
► Then, A uranium bomb code-named “Little Boy” used on
August 6th, 1945 at Hiroshima, Japan.
► Thirdly, a plutonium bomb code-named “Fat Man” which
was used on August 9th, 1945 at Nagasaki, Japan.
► Was the code-name of the first
nuclear bomb ever used, which was
against Japan at Hiroshima on
August 6, 1945.
► It is a Gun type bomb using
uranium to make the nuclear
► A B-29 bomber named Elona Gay,
piloted by Colonel Paul Tibbets
carried the bomb to Hiroshima.
► Instantly upon impacted it is
estimated that about 70,000 were
► In the end, about 140,000 were
killed by Nuclear Fallout and
A Shot of the Aftermath of Hiroshima.
► Code-name of the second nuclear
bomb ever used, which was on
August 9, 1945 at Nagasaki.
► It is a implosion type of bomb with
a plutonium core. It was more
powerful that the Little Boy, but
also more efficient with use of
► A B-29 bomber Bockscar, piloted by
Major Charles Sweeney carried and
deployed the bomb.
► It was detonated over Nagasaki and
killed 40,000 instantly. More died
of nuclear fallout soon after.
A Shot of the Before & After Effects on Nagasaki.
Results of Fat Man & Little Boy
►A total death toll of the two bombing in the three
days added easily over 200,000 people. A vast
majority of them being innocent civilians.
► At the same time, Russia was starting to engage
war with Japan, and proceeded with starting war
putting Japan into a impossible position.
► By August 12, the Emperor informed the imperial
family of his decision to surrender. Two days later
on August 14, he recorded his surrender which
was played the next day to his nation. Making the
official day of surrender August 14, 1945. Which
ended WW2 finally.
► "Atomic bombings of Hiroshima and Nagasaki." Atomic bombings of Hiroshima and
Nagasaki - Wikipedia, the free encyclopedia. 7 Apr 2007. Wikimedia Foundation,
Inc. 8 Apr 2007
► Coffin, Judith, and Robert Stacey. Western Civilizations. New York, London:
W W Norton & Company.
► "Fat Man." Fat Man - Wikipedia, the free Encyclopedia. 21 March 2007. Wikimedia
Foundation, Inc. <http://en.wikipedia.org/wiki/Fat_Man>.
► "Little Boy." Little Boy - Wikipedia, the free encyclopedia. 08 April 2007. Wikimedia
Foundation, Inc. 8 Apr 2007 <http://en.wikipedia.org/wiki/Little_Boy>.
► "Little Boy and Fat Man." Little Boy and Fat Man Nuclear Weapons. 2003. National
Atomic Museum. 8 Apr 2007 <http://www.atomicmuseum.com/tour/dd2.cfm>.
► "Manhattan Project." Manhattan Project - Wikipedia, the free Encyclopedia. 08
April 2007. Wikimedia Foundation, Inc. 8 Apr 2007
► Sublette, Carey. "The First Atomic Weapons." The First Atomic Weapons. 30 March
1999. 8 Apr 2007 <http://nuclearweaponarchive.org/Usa/Med/Lbfm.html>.