John R. Klein

MachinistLos Alamos, NM

Chicago, IL

Manhattan Project VeteranMilitary VeteranSpecial Engineer Detachment

John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos. He was a supply sergeant and a machinist, helping construct some of the fixtures for the Trinity test site.

Related Profiles

Walter D. Main

Oak Ridge, TN

Walter Main worked for the United States Engineer District Office.

Tranquilino Armigo

Los Alamos, NM

Tranquilino Armigo was a staff member at Los Alamos during the Manhattan Project.

George W. Green

Tinian Island

George W. Green served in the 1395th Military Police Company, Aviation.

R. W. Engels

Research & Development/300 Area

R. W. Engels worked at the 300 Area at Hanford during the Manhattan Project.