Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Eugene S. Grennan

Flight Engineer on the Straight FlushHiroshima Mission

Tinian IslandWendover, UT
509th Composite GroupHiroshima MissionManhattan Project VeteranMilitary Veteran
The Straight Flush

Eugene S. Grennan served as a 2nd lieutenant in the 509th Composite Group. He was the flight engineer on the Straight Flush during the Hiroshima mission.

Related Profiles

Victor E. Flanders

K-25 Plant

Attended Syracuse University.

Ina Cooper

Oak Ridge, TN

Ina Irene Cooper worked on the Manhattan Project for Union Carbide and Carbon Company and for Ford, Bacon, and Davis in Oak Ridge, TN, in 1944-45.

Kenneth H. Bruner

Oak Ridge, TN

Bruner worked in the United States Engineer District Office.

Sid Williams

Oak Ridge, TN

Sid Williams worked for the H. K. Ferguson Company.