Constructed under an abandoned stand of bleachers at the University of Chicago, the world’s first artificial nuclear reactor was little more than a pile of uranium and graphite bricks. It was built as part of the Manhattan Project under the supervision of renowned physicist Enrico Fermi. The first successful demonstration lasted 28 minutes and was a milestone in the history of physics. What code phrase did scientists use to convey the reactor’s success to government officials? Discuss
Source: The Free Dictionary