The operation was relatively simple, but it required people to constantly monitor the calutrons.[2] Due to a labor shortage, there were not enough scientists to operate all of them, and many young men were fighting in the war overseas, so the government recruited farm girls to operate the calutrons instead.[2][3] Local women were recruited because they were readily available, accustomed to hard work and were expected not to ask excessive questions and to be loyal and docile.[4]
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