A professional who tends machines that make peanut butter. Respnsibilities include:

• Opens valves to fill mixing chamber with roasted nuts, and adds specified amounts of salt, sugar, and homogenizing ingredients.
• Observes gauges to determine if temperature in mixing chamber is within specified limits.
• Turns dial to regulate speed of pumps which force mixture through grinding chambers.
• Opens valves to allow mixture to flow from one grinding chamber to another to obtain specified texture, and transfer ground mixture into cooling mixer.
• May tend automatic equipment that roasts nuts, fills, labels, and caps containers, and packs containers in shipping cartons.