Delbert F. Johnson

Mechanical EngineerLos Alamos, NM

Trinity Site

Manhattan Project VeteranMilitary VeteranSpecial Engineer DetachmentTrinity Test Eyewitness

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

Perry V. Davis

Los Alamos, NM

J. C. Nelson

Oak Ridge, TN

J. C. Nelson worked for the Roane-Anderson Company.

Popovi Da

Los Alamos, NM

Popovi Da was the son of Pueblo potter Maria Montoya Martinez and a veteran of the Manhattan Project.

V. Alexander Nedzel

Chicago, IL

V. Alexander Nedzel was a research assistant at the University of Chicago Met Lab. After the Manhattan Project, he worked at the Institute for Nuclear Studies and was head of the Aerospace Division at MIT Lincoln Laboratory.