National Museum of Nuclear Science & History
M. S. Cressy worked for the Fercleve Corporation.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ethel Ann Caylor was a nurse at the Los Alamos Hospital. She worked here from 1944 to 1945. While not much is known of Caylor’s work, it is believed that she was assigned to the maternity ward.
Ernest Mekanas was a member of the Provisional Engineering Detachment at Los Alamos. Mekanas was in Los Alamos from 1943 to 1945, working primarily at the post office.
