To produce 20 million pounds of product per year, the department operated 24 hours a day, 7 days a week.
Four crews rotated shifts.
For example, shift foreman A and his two group leaders and crews would work two weeks on the day shift (8:00 a.m. to 4:00 p.m.),
then two weeks on the evening shift (4:00 p.m. to midnight), and then two weeks on the night shift (midnight to 8:00 a.m.). There were two days off between shift changes.