More information from O*NET OnLine:

Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders - 51-9021.00

O*NET-SOC Description

Set up, operate, or tend machines to crush, grind, or polish materials, such as coal, glass, grain, stone, food, or rubber.

Sample of Reported Job Titles

Beveler Operator
Cullet Trucker
Grinder
Grinder Operator
Machine Operator

Machine Tender
Miller
Polisher
Preparation Operator (Prep Operator)
Pulverizer

SOC Occupation Groups

51-0000	Production Occupations
51-9000	Other Production Occupations
51-9020	Crushing, Grinding, Polishing, Mixing, and Blending Workers
51-9021.00	Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders

Related Occupations

51-4023.00	Rolling Machine Setters, Operators, and Tenders, Metal and Plastic
51-4033.00	Grinding, Lapping, Polishing, and Buffing Machine Tool Setters, Operators, and Tenders, Metal and Plastic
51-4194.00	Tool Grinders, Filers, and Sharpeners
51-7042.00	Woodworking Machine Setters, Operators, and Tenders, Except Sawing
51-9012.00	Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders
51-9022.00	Grinding and Polishing Workers, Hand
51-9023.00	Mixing and Blending Machine Setters, Operators, and Tenders
51-9032.00	Cutting and Slicing Machine Setters, Operators, and Tenders
51-9041.00	Extruding, Forming, Pressing, and Compacting Machine Setters, Operators, and Tenders
53-7063.00	Machine Feeders and Offbearers

Tasks

Add or mix chemicals and ingredients for processing, using hand tools or other devices.
Clean work areas.
Clean, adjust, and maintain equipment, using hand tools.
Collect samples of materials or products for laboratory testing.
Dislodge and clear jammed materials or other items from machinery and equipment, using hand tools.
Examine materials, ingredients, or products, visually or with hands, to ensure conformance to established standards.
Inspect chains, belts, or scrolls for signs of wear.
Load materials into machinery and equipment, using hand tools.
Mark bins as to types of mixtures stored.
Move controls to start, stop, or adjust machinery and equipment that crushes, grinds, polishes, or blends materials.
Notify supervisors of needed repairs.
Observe operation of equipment to ensure continuity of flow, safety, and efficient operation, and to detect malfunctions.
Read work orders to determine production specifications and information.
Record data from operations, testing, and production on specified forms.
Reject defective products and readjust equipment to eliminate problems.
Set mill gauges to specified fineness of grind.
Tend accessory equipment, such as pumps and conveyors, to move materials or ingredients through production processes.
Test samples of materials or products to ensure compliance with specifications, using test equipment.
Transfer materials, supplies, and products between work areas, using moving equipment and hand tools.
Turn valves to regulate the moisture contents of materials.
Weigh or measure materials, ingredients, or products at specified intervals to ensure conformance to requirements.

Detailed Work Activities

Adjust equipment controls to regulate flow of water, cleaning solutions, or other liquids.
Clean production equipment.
Clean work areas.
Clear equipment jams.
Collect samples of materials or products for testing.
Evaluate quality of materials or products.
Inspect production equipment.
Load materials into production equipment.
Maintain production or processing equipment.
Mark products, workpieces, or equipment with identifying information.
Measure dimensions of completed products or workpieces to verify conformance to specifications.
Measure ingredients or substances to be used in production processes.
Mix substances to create chemical solutions.
Monitor equipment operation to ensure proper functioning.
Move products, materials, or equipment between work areas.
Notify others of equipment repair or maintenance needs.
Operate grinding equipment.
Operate pumping systems or equipment.
Read work orders or other instructions to determine product specifications or materials requirements.
Record operational or production data.
Test chemical or physical characteristics of materials or products.
Weigh finished products.