A professional who tends machine that cuts strands of smokeless powder into grains of designated size to produce explosives having uniform ballistic properties. Respnsibilities include:

• Changes gear ratio of machine-feed mechanism to cut grains to specified size.
• Feeds flexible strands of colloidal powder through guide holes into cutter.
• Starts flow of liquid coolant, such as alcohol or water, playing on cutting area to prevent outbreak of fire.
• Empties fiber containers of cut powder into cart.