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The Development, The Development, Decision, and Decision, and
ReactionReaction
FDR died on April FDR died on April 12, 194512, 1945
Truman Truman becomes becomes PresidentPresidentKnew nothing about Knew nothing about
Manhattan ProjectManhattan ProjectFavors use of bomb Favors use of bomb
to end war quicklyto end war quickly
Interim CommitteeInterim CommitteeGov’t leaders, Gov’t leaders,
officials, & scientists officials, & scientists discuss usagediscuss usage
Recommend usageRecommend usageMany scientists Many scientists who who
had worked on had worked on project project oppose usageoppose usageGerman threat German threat
defeateddefeatedhttp://www.atomicarchive.com/Movies/Movie8.shtml
B-29 BomberB-29 BomberDropped “Little Dropped “Little
Boy” on Boy” on HiroshimaHiroshima
Piloted by Piloted by Colonel Colonel Paul Paul TibbetsTibbets
Why Chosen?Why Chosen?Major port, military Major port, military
HQ, war industriesHQ, war industriesUntouched by Untouched by
previous previous bombingbombing raidsraids
Urban area Urban area – hoped – hoped to break will of to break will of JapaneseJapanese
PopulationPopulationMilitary – 43,000Military – 43,000Civilian – 285,000Civilian – 285,000
August 6August 6thth – – 8:15AM8:15AMLittle Boy Little Boy
ExplodesExplodesResultsResults
Thousands Killed Thousands Killed InstantlyInstantly
70,000 Killed70,000 Killed20 US POWs20 US POWs
70,000 Injured70,000 InjuredBy end of 1945By end of 1945
140,000 Dead 140,000 Dead (20,000 military)(20,000 military)
In 5 years timeIn 5 years time200,000 dead200,000 dead
No Japanese SurrenderNo Japanese SurrenderWhy Chosen?Why Chosen?
Large Seaport Large Seaport in in Southern JapanSouthern Japan
Wartime IndustriesWartime IndustriesManufactured Manufactured
torpedoes used at Pearl torpedoes used at Pearl HarborHarbor
Actually secondary Actually secondary target target Weather poor at Weather poor at
primaryprimary
August 9August 9thth – 11:01AM– 11:01AMFat Man ExplodesFat Man Explodes
ResultsResultsThousands Killed Thousands Killed
InstantlyInstantly40,000 Killed40,000 Killed60,000 Injured60,000 InjuredLess Damage than Less Damage than
Hiroshima – due to Hiroshima – due to geographygeography
By end of 1945By end of 194570,000 Dead 70,000 Dead
Final Total Dead Final Total Dead = = 140,000140,000
VJ DayVJ Day – August – August 1414thth 1945 1945Japanese SurrenderJapanese Surrender
http://www.history.com/media.do?action=clip&id=mf949_vjday_49
September 2, September 2, 1945 1945 Official Official
signing of signing of surrendersurrender
USS Missouri USS Missouri One of ships One of ships
attacked at attacked at Pearl HarborPearl Harbor
Arms Race / Cold WarArms Race / Cold War
Health of JapaneseHealth of Japanese
Others Want/Get the Others Want/Get the BombBomb
After watching the reenactment of the bombing After watching the reenactment of the bombing of Hiroshima and seeing the effects of the A-of Hiroshima and seeing the effects of the A-Bombs, do you still believe your decision about Bombs, do you still believe your decision about what to do with the bombs is correct? Why or Why what to do with the bombs is correct? Why or Why not?not?