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Home / Apprenticeships / Occupations / Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders

Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders: apprenticeship hours and pay

O*NET-SOC 51-9021.00

Approved titles
3
RAPIDS codes
Shortest term
4,000 h
longest minimum 6,000 h
National median pay
$48,540
a year, BLS May 2025
Jobs nationally
26,000
BLS May 2025

Approved apprenticeship titles

3 apprenticeship titles on the Department of Labor's approved list fall under Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders, trained competency-based, hybrid, time-based. The shortest approved term is 4,000 hours, for SURFACE-PLATE FINISHER (competency-based).

TitleRAPIDS codeApproach and term
MILLER, WET PROCESS0333
Competency-Based: 6,000 hours
Hybrid: 6,000 to 7,500 hours
Time-Based: 6,000 hours
PLANT OPERATOR0961
Competency-Based: 6,000 hours
Hybrid: 6,000 to 7,500 hours
Time-Based: 6,000 hours
SURFACE-PLATE FINISHER0478
Competency-Based: 4,000 hours
Hybrid: 4,000 to 5,000 hours
Time-Based: 4,000 hours

Time-based programs count hours on the job; competency-based programs move on when the apprentice shows the skills; hybrid programs use both, within a range of hours (29 CFR 29.5(b)(2)). Each registered program sets its own term inside what the approved title allows.

What crushing, grinding, and polishing machine setters, operators, and tenders earn, by state

Wyoming has the highest state median for crushing, grinding, and polishing machine setters, operators, and tenders ($71,300) and Puerto Rico the lowest ($23,340), across the 48 states with a published figure.

StateMedian payHourlyJobs
Wyoming$71,300$34.28170
Alaska$68,730$33.0460
Iowa$62,590$30.091,420
Nevada$60,180$28.93660
Montana$60,110$28.90260
Nebraska$58,920$28.33270
Vermont$58,890$28.31160
West Virginia$58,760$28.25160
New York$58,090$27.93950
Minnesota$56,550$27.19660
Oregon$55,600$26.73490
Wisconsin$54,580$26.24530
Maine$54,080$26.00150
Connecticut$53,130$25.54200
Pennsylvania$52,560$25.27980
Alabama$51,920$24.96610
Utah$51,770$24.89260
Idaho$51,500$24.76370
Indiana$51,150$24.59920
New Hampshire$50,360$24.21130
Arizona$50,270$24.17Not published
Massachusetts$50,110$24.09370
North Dakota$49,280$23.69310
Missouri$48,840$23.48750
Kansas$48,570$23.35470
South Dakota$48,330$23.24120
Illinois$48,290$23.22710
Washington$48,020$23.09470
Colorado$46,950$22.57520
Florida$46,950$22.57520
New Jersey$46,690$22.45560
Michigan$46,500$22.36670
North Carolina$46,270$22.25560
Georgia$45,920$22.08800
California$45,870$22.052,370
New Mexico$45,760$22.00170
Virginia$45,560$21.90530
South Carolina$45,280$21.77330
Texas$45,090$21.681,440
Louisiana$44,900$21.59200
Ohio$43,850$21.081,590
Tennessee$42,950$20.651,290
Kentucky$42,520$20.44200
Maryland$42,280$20.33140
Arkansas$38,910$18.71520
Oklahoma$38,380$18.45390
Mississippi$37,420$17.99170
Puerto Rico$23,340$11.22100

Finding a program

The public sponsor file names the organizations that run registered apprenticeships but not the occupations each one trains, so this guide names no sponsor. Search apprenticeship.gov's Apprenticeship Finder for this title, or ask your American Job Center which local programs train it.

Sources: apprenticeship.gov approved occupations list (Last-Modified October 8, 2026); BLS Occupational Employment and Wage Statistics, May 2025 (all industries; blanks are figures BLS does not publish).

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