When I hauled lettuce from Imperial Valley California there was no "factory". It went straight from the pickers' hands in the fields to a cardboard box, 24 heads to a case, into a vacuum cooler, and straight into my refrigerated trailer. A 4-man loading crew could fill a 45 foot trailer with 700+ cases in less than an hour. In the off season those guys would travel to the midwest as a group, arm wrestling for big bucks in beer joints. Nobody would challenge them within several hundred miles of their home territory.
When they’re not packing lettuce they are touring the country arm wrestling? Interesting.