Manhattan Project
... The first of these weapons were developed in the early 1940’s in a secret government project code named the Manhattan Engineer District of the War Department, or simply, the Manhattan Project. The Manhattan Project would lead to the development of the atomic bomb, the most powerful weapon the world had ever seen. ... The scientist working on the project now felt an even greater urgency to get the bomb developed. ... Now that the scientist had master the chain reaction, it was time to build a bomb, and so the Manhattan Project began. One of the first priorities for the government was to find a remote location where the Manhattan Project could be carried out. ... The Manhattan Project produced the most destructive weapon man had ever created, and laid the footwork for the even more powerful hydrogen bomb.