The Atomic Bombs: Hiroshima and Nagasaki The Atomic Bomb: Hiroshima & Nagasaki The Atomic Bombs: Hiroshima and Nagasaki

The Bombs The atomic bombs were used on Japan during World War II by the US to try to force the Japanese to surrender.

The Manhattan Project June 1942, atomic-bomb project was controlled by War Department's Army Corps of Engineers. At the height of construction in mid 1944, the Project employed nearly 129,000 people. To disguise this ultra-secret project, the Corps created a Manhattan Engineer District, with a headquarters initially based in New York City. Most work done at Los Alamos, New Mexico

The Bombs Over Hiroshima ~Named “Little Boy” Size=8,900 pounds Over Nagasaki ~Named “Fat Man” Size=10,800 pounds

When They Hit On August 6th, 1945 President Truman gave the order to Pilot Paul Tibbets to drop “Little Boy” on Hiroshima. The name of plane was Enola Gay. On August 9th, 1945 they dropped “Fat Man” on to Nagasaki.

Hiroshima Hiroshima was Japan’s 7th largest City. In minutes of the bombing half of the city had vanished. Of Hiroshima’s 90,000 buildings, 60,000 were demolished

Nagasaki Nagasaki wasn’t the first target on August 9th. At first the target was Kokura but due to smoke cover Nagasaki was hit. Nagasaki was an industrialized city. The bomb exploded 1,800 feet over the city for maximum blast effect.

Deaths Of Hiroshima According to U.S. estimates the death amount was 60,000 to 70,000 people 140,000 people were injured. Deadly radiation reached 100,000. Thousands died instantly.

Deaths of Nagasaki Killed 42,000 and injured 40,000 more. Many were burned due to burned homes…

Mushroom Cloud of Hiroshima Smoke had billowed 20,000 feet in the air and had spread 10,000 feet on the target.

Mushroom Cloud over Nagasaki The cloud was at a height of 60,000 feet.

War Between USA and Japan The US and Japan had been at war since Japans attack on Pearl Harbor in 1941 until 1945 when the US dropped the atomic bombs.

Leaders In World War 2 The President for the United States of America when the atomic bombs were dropped was President Truman. The ruler of Japan during World War II was Emperor Hirohito.

The Little Boy Name- Mk 1 bomb First Nuclear Weapon used in warfare Delivered by B-29 Enola Gay (Plane) Explosive force equal to 20,000 tons of TNT.

The Fat Man Released by B-29 Bockscar (plane) Also about 20,000 tons of TNT in explosive force. Damage less due to hilly terrain. Implosion-type weapon using plutonium.

Why Japan Ended up Bombed The reason that the US bombed Japan was because on July 26, President Truman issued the Potsdam Declaration, calling for Japan’s unconditional surrender and listed peace terms, Japan was warned of the consequences if refused to surrender, and they still refused to surrender causing the first bomb “Little Boy” to be dropped.

Radiation Some 70,000 people died from heat, radiation effects at Hiroshima. This included 20 American prisoners A few days after the blast people noticed radiation sickness in the survivors. Then the death rate began to climb.

Survivors Within the year of the bombing the death toll was about 200,000. Today there are as many as 400,000 survivors from the bombings. Most survivors keep their history secret with fear of rejection from others.

Japan Surrenders The Japanese surrendered on September 2, 1945. The ceremony took place on the USS Missouri accompanied by British ships in Tokyo Bay. Japan agreed to a ceasefire and the release of POW’s.