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?