Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Margaret Caldes

SecretaryLos Alamos, NM

Manhattan Project VeteranProject Worker/StaffSpouse to Manhattan Project Worker
Margaret E. Caldes's Los Alamos ID badge

Margaret Caldes moved to Los Alamos when her husband, William E. Caldes, was recruited to join the project in 1943. She worked as a secretary for Julian Mack in the photography department.

Related Profiles

Joseph A. Haaga

Research & Development/300 Area

Joseph “Joe” A. Haaga (1919-1974) was a nuclear engineer who worked on the Manhattan Project. Born in 1919, Haaga graduated from Notre Dame in June 1940 with a B.

E. J. O’Black

T-Plant/200 Areas

O’Black worked in the 200 East Area at Hanford during the Manhattan Project.

Iver Samuelson

Y-12 Plant

Iver Samuelson worked for the Tennessee Eastman Corporation at the Y-12 Plant.

J.A. Jones

Research & Development/300 Area

Jones worked at the 300 Area at Hanford during the Manhattan Project.