Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Delbert F. Johnson

Mechanical EngineerLos Alamos, NM

Trinity Site
Manhattan Project VeteranMilitary VeteranSpecial Engineer DetachmentTrinity Test Eyewitness
Delbert Johnson

Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C. Bush and witnessed the Trinity site explosion on July 16, 1945. After the bomb test, Johnson was one of the first to enter the crater to conduct scientific measurements.  

A Commendation for Delbert Johnson from President Harry Truman

Related Profiles

Leon Leventhal

Los Alamos, NM

Leon Leventhal was a nuclear chemist and radiation expert who worked at Oak Ridge, the University of Chicago’s Met Lab, and Los Alamos Laboratory during the Manhattan Project.

William T. Dodge

Hanford, WA

D. C. Berry

Hanford, WA

G. L. Cubbison

Oak Ridge, TN

G. L. Cubbison worked for the Edenfield Electric Company.