Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Walter F. McCaleb

Staff SergeantTinian Island

Wendover, UT
509th Composite GroupManhattan Project VeteranMilitary Veteran
North Airfield at Tinian Island.

Walter F. McCaleb served in the 393rd Bombardment Squadron.

Related Profiles

Thomas F. Costa

Tinian Island

Thomas F. Costa served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the bombardier regularly assigned to the B-29 Some Punkins.

D.M. Ellett

Los Alamos, NM

​D. M. Ellett is a mechanical engineer who joined the Manhattan Project after the end of World War II.

George Cowan

Los Alamos, NM

George Cowan joined the Manhattan Project in 1942 at the Met Lab as a chemist for Enrico Fermi’s group, and also worked for Columbia University.

Ercole E. Motta

Chicago, IL

Ercole E. Motta was a research assistant at the University of Chicago Met Lab. He studied ways to determine the boron content of uranium oxide.