The National Park Service runs three different sites related to the World War II Manhattan Project. The one on the Hanford Nuclear Reservation in southeast Washington was the first full-scale nuclear ...

Editor’s note: On Oct. 16, 2024, about 100 Tri-Cities area leaders and people who worked to preserve Hanford’s historic B Reactor as part of the Manhattan Project National Historical Park gathered at ...

December — Dr. Enrico Fermi achieves the first controlled nuclear chain reaction, with a natural uranium device moderated with graphite. Fermi conducted the process using the first demonstration ...

The new age began on a chill, grey afternoon 20 years ago. The site was a laboratory in a squash court beneath the stands of the University of Chicago’s old Stagg Field Stadium. Gathered there was a ...