The Manhattan Project Locations
The top secret Manhattan Project for developing the first atomic bombs, was one of the most ambitious and expensive military research projects in history.
The project employed as many as 130,000 people and cost more than $2 billion (about $25 billion in modern-day dollars).
This map shows the sites where the most important Manhattan Project work was conducted. A key site was in Oak Ridge, TN, where the military constructed facilities for separating uranium. The scientific research needed to develop the bomb was centered at the Los Alamos National Laboratory in New Mexico. The Hanford Engineer Works facility near Richland, WA, was the site of plutonium enrichment efforts. Scientists detonated the first nuclear explosion in history at the Trinity Test Site in New Mexico on July 16, 1945.(Source: Vox)