National Museum of Nuclear Science & History
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.
Langworthy worked in the 200 East Area at Hanford during the Manhattan Project.
Frank Fessenden worked for the Tennessee Eastman Corporation at the Y-12 Plant.
