Miami Valley

A Miamisburg site that played a big role in nuclear history will soon be open to the public. It’s the home of the former Mound Laboratories - known to some in the Miami Valley for its important role in developing the first atomic bomb.
 
Beginning this month the Cold War-era Mound will also house a new Dayton History museum. Organizers hope it will showcase this critical but often controversial chapter of American history.

At the height of operations after World War II, Mound Laboratories in Miamisburg employed around 2,500 workers.