Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Ralph G. Steinhardt, Jr.

Special Engineer DetachmentLos Alamos, NM

Manhattan Project VeteranMilitary VeteranSpecial Engineer Detachment

Ralph Steinhardt was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.

Related Profiles

William Sweeney

Hanford, WA

Monsignor William Sweeney studied for the priesthood in Worcester, Massachusetts, and came to Washington state in 1938.

K. R. Snow

Research & Development/300 Area

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

Herbert A. Fisch

K-25 Plant

Attended Case Western Reserve University. 

R. J. Dunbar

Y-12 Plant

R. J. Dunbar worked for the Tennessee Eastman Corporation at the Y-12 Plant.