William E. Caldes

Chemical EngineerLos Alamos, NM

Trinity Site

Manhattan Project VeteranScientistTrinity Test Eyewitness

William E. Caldes studied chemical engineering at Princeton University. In 1943, he was recruited to join the Manhattan Project, and became the 19th project member at Los Alamos. He witnessed the Trinity test. His wife, Margaret Caldes, joined him at Los Alamos. After the war, he had a long career at Sandia National Laboratories.

William E. Caldes’s Timeline

19431945 Worked on the Manhattan Project at Los Alamos.

1945 Jul 16th Witnessed the Trinity test.

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