Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Joseph LaRocco

Security GuardChicago, IL

Manhattan Project Veteran

Joseph LaRocco was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Related Profiles

H. R. Grady

Y-12 Plant

H. R. Grady worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Martha Zukas

Los Alamos, NM

Martha Zukas was a nurse at Oak Ridge and Los Alamos during the Manhattan Project. One of nine children, Zukas grew up in Ellwood City, PA.

Leon J. Vrana

Tinian Island

Leon J. Vrana served in the 320th Troop Carrier Squadron.

Sanford N. McDonnell

Los Alamos, NM

Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.