The History of the Alsos Mission

In 1943 several American scientists began examining all the rumors about Heisenberg and other physicists. Their calculations reveal that Hitler would soon have enough radioactive material to build a dirty bomb Unlike traditional nuclear bombs Dirty bombs don't use radioactive materials to create a fission explosion But instead the highly radioactive isotopes are used as a poison spread by conventional explosives. This sent the American scientists imaginations galloping Obviously, Hitler would try to detonate the bomb in a big city to hurt as many people as possible So officials set up secret nuclear defense systems in Boston, Chicago, New York, San Francisco, and Washington. The Manhattan Project decided they needed more information about what exactly German scientists were up to so they put