Job Description:

• 1) Tends grinding mill that crushes powder or explosives ingredients, such as sulfur, saltpeter, and charcoal, used in manufacturing gunpowder: Charges mill with prescribed amounts of ingredients.

• 2) Starts mill wheel revolving for specified time or until materials are crushed and mixed and rakes or dumps contents into containers for storage or further processing.

• 3) When tending mill that crushes finished powder to grains of specified size to attain uniform ballistic properties, is designated Graining Operator.

• 4) May tend vibrating screens to separate particles of varying sizes.