Control guns to expand or puff whole grains to produce breakfast cereals.

What does a Gunner do?

Controls guns to expand or puff whole grain to produce breakfast cereal: Presses button to admit grain and water to electric- or gas-heated cylinder. Clamps lid in place and starts cylinder rotating. Turns valves and moves controls to regulate air pressure and temperature in cylinder to obtain product having puffed kernels of specified size, color, and uniformity. Removes lid after specified time, causing grain to expand as it escapes from cylinder. Examines and feels product to determine need for adjustments in process conditions.