Job Description:

• 1) Tends machines that dry, grind, and screen materials, such as sodium nitrate, apricot pits, sulfur, and clay for use in making dynamite: Shovels or dumps materials into drier hopper and adjusts temperature of steam-heated drier to specified reading.

• 2) Starts conveyors and elevators that convey materials through drier and grinder.

• 3) Starts grinder and sifting screens that grind and screen materials and deposit them in bins.