This image from 1945 shows Manhattan Project physicist Harold Agnew smiling and holding the plutonium core of one of ... the heart of the "Fat Man" atomic bomb was detonated on August 9, 1945 ...

They designed two bombs, one using uranium (called "Little Boy") and one using plutonium ("Fat Man"). By early 1945, the plants at Oak Ridge and Hanford had produced enough raw material for testing.

The Fat Man, a plutonium-centered implosion bomb, was over 10,000 pounds. But the nuclear core was only 13 pounds and about the size of an orange. Soldiers working on the bomb didn't need ...

The obstacle, however, was the Mark 4 nuclear bomb (an improved version of Fat Man from Nagasaki ... consequences due to the lack of a plutonium core in the Mark 4. Therefore, a chain reaction ...

Although the bomb’s tail was found ploughed 20 feet deep into the muddy ground, its core remained missing ... 190 times more ...

The history of other countries’ weapons programs shows that Tehran could complete and deploy a missile-deliverable warhead in ...

the material used in the Fat Man bomb dropped on Nagasaki. Little Boy, which exploded over Hiroshima, was a uranium bomb. While the Manhattan Project operated under strict secrecy, Karpin believes ...

The man who allegedly threw a bomb inside a California courthouse this week, injuring five people, said he was upset about his firearms being taken away, authorities said. Nathaniel James McGuire ...

GOLDEN CITY, Mo. — A Golden City man was arrested for several driving violations and having a bomb in his possession. According to court documents, Terry Don Mitchell, 52, was arrested on ...

Outside, the 9-acre Heritage Park stores a collection of rare and historically important aircraft and missiles, such as a B-29 Superfortress like the one that carried the "Fat Man" bomb.

A man was indicted for an alleged bomb hoax on a Carnival Cruise Line ship. Joshua Darrell Lowe II is charged with making a false bomb threat, the U.S. Attorney's Office for the Western District ...