A professional who tends grinding machine that hulls cooked corn and grinds it into masa (cornmeal dough) for use in production of products, such as tortillas and corn chips. Respnsibilities include:

• Scoops cooked corn into hopper of grinding machine or attaches pipe to outlet on soaking vat and starts pump to transfer corn from holding vat through washer and onto conveyor that carries corn into hopper of grinder.
• Starts grinder.
• Feels masa to determine consistency of grind, and adjusts grinding stones when necessary.