Charles E. Seifert

Opaline Calhoun

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

Harryetta Emerson

Dwight F. Henderson

Henderson worked at the 100-D Area at Hanford during the Manhattan Project.

H. W. Butsch

H. W. Butsch worked for the William A. Pope Company.