Leonard J. Haigerty

Mary Lou Curtis

Mary Lou Curtis joined the Manhattan Project in Dayton, Ohio in 1943. Mrs. Curtis worked in the Counting Room at Monsanto’s Unit III facility, where she developed new methods to measure and analyze radioactive materials, such as polonium, which was used as the trigger for the atomic bombs.

L.H. Schaelling

A. H. Harmon

Harmon worked for Stone and Webster Engineering Corporation.

Hugh M. Barton

Hugh Barton was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.