First of all, the job made enormous demands on my strength and energy. For ten hours a night, I took cartons that rolled down a metal track and stacked them onto wooden skids in a tractor-trailer. Each carton contained twelve heavy cans or bottles of fruit juice. A carton shot down the track about every fifteen seconds. I once figured out that I was lifting an average of twelve tons off fruit juice every night. When a truck was almost filled, I or my partner had to drag fourteen bulky wooden skids into the empty trailer nearby and then set up added sections of the heavy metal track so that we could start routing cartons to the back of the empty van. While one of us did that, the other performed the stacking work of two men.