A professional who tends machine, equipped with power-driven wire brush, that polishes bottoms of metal dry cell battery containers (cans). Respnsibilities include:

• Dumps box of cans into tray on bed of machine.
• Presses cans into tray to level bottoms.
• Start rapidly rotating brush.
• Grasps handle on tray and slides tray back and forth to bring bottoms into contact with brush.
• Inspects can bottoms to ensure cleanliness.
• Withdraws tray and inverts it over box to dump cans.