The Department of Energy office in Grand Junction has installed an exhibit of historical photographs marking the 75th anniversary of  the role of the office in the Manhattan Project to develop an atomic bomb and subsequent Cold War.

The exhibit will remain on display through Oct. 10 in the lobby of Grand Junction City Hall, 250 N. Fifth St. The lobby is open from 7:30 a.m. to 5 p.m. weekdays.

The exhibit includes photos of Grand Junction and its residents during World War II, through the uranium boom and cleanup efforts. A Babbel Counter, a radiological survey instrument developed and manufactured in Grand Junction, and other items also are displayed.