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

Anna M. Case

Hanford, WA

Dr. M. R. Petersen

Hanford, WA

Appears in the 1944 Hanford Telephone Directory as “Petersen” and the 1945 Directory as “Peterson”.

E. W. Smith

Oak Ridge, TN

E. W. Smith worked for the Union Carbide & Carbon Corporation.

William E. Carroll

Tinian Island

William E. Carroll served in the 390th Air Service Group.