A professional who tends machine that precooks meat products preparatory to canning. Respnsibilities include:

• Starts machines and conveyors, and loads meat into grinder to be ground and fed into cooker.
• Observes temperature gauge and color of meat during cooking process, and turns valve or adjusts rheostat to maintain specified temperature for prescribed cooking time.
• Turns valves to permit flow of cooking fluid into machine and from machine into filtering tanks.