A professional who tends rod mills that grind ore, clinkers, and rock into fine particles. Respnsibilities include:

• Starts mill and feed conveyors.
• Turns valves to feed lime, water, starch, soda ash, and other materials into mill to make slurry.
• Pushes button to start screw conveyor that separates coarse particles from slurry and returns them to mill for regrinding.
• Obtains sample of ore or slurry in bucket for laboratory analysis.
• Weighs sample on balance scales to determine density of slurry.
• Turns valves to feed water into mill to obtain specified density of slurry.
• Replaces worn rods in mill, using electric hoist.
• May record operating time of rod mills and levels of materials in storage bins.