Final answer:
The processing of trays involves cooling the shells, placing them on a conveyor belt, and using machines to cut and peel the shells until a polished steel piece is obtained.
Step-by-step explanation:
The processing of trays coming down the jackpot lane with the Sort Tray Kickout Tool is carried out through a series of steps. First, the shells are cooled after coming out of the blasting furnaces. Then, they are placed on a conveyor belt and a lever is pushed to lift the shells onto the belt. A man then performs a task to lower the shells into machines. When the shell reaches a machine, a lever is pushed to activate a knife that peels the shell. Jagged pieces are knocked off quickly to prevent them from swinging around. The process continues with each machine making the subsequent cut until a beautifully polished steel piece is obtained.