JobSOC 51-9021

Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders

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

Definition from U.S. Department of Labor, Employment and Training Administration (USDOL/ETA) (O*NET 31.0 (August 2026)).