During a typical shift, a group leader and his crew would complete two or three batches.
A batch would frequently be started on one shift and completed by the next shift crew.
There was slightly less work on the evening and night shifts because no deliveries were made, but these crews engaged in a little more cleaning.
The shift foreman would give instructions to the two group leaders at the beginning of each shift as to the status of batches in process, batches to be mixed, what deliveries were expected, and what cleaning was to be done.
Periodically throughout the shift the foreman would collect samples in small bottles, which he would leave at the laboratory technicians’ desk for testing.