Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

O.W. Johnson

Project StaffHanford, WA

Manhattan Project VeteranProject Worker/Staff

Related Profiles

C. W. Hess

Tinian Island

C. W. Hess served in the 509th Headquarters and Base Services Squadron. 

H.C. James

Research & Development/300 Area

James worked at the 300 Area at Hanford during the Manhattan Project.

Opaline Calhoun

Chicago, IL

Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Wilcox P. Overbeck

Chicago, IL

Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.