Female high school graduates were recruited for positions as "cubicle operators" at Y-12, and have been more recently referred to as "Calutron Girls." Ruth Huddleston is third back on the left, seated. GIRL POWER, C. 1940s BUILDING THE BOMB AND NOT KNOWING IT Thousands of "Calutron Girls" helped build the atomic bombs of World War II-but were unaware of what they were doing. By NANCY HENDERSON MAY/JUNE 2020 23