Occupational Employment Statistics

Occupational Employment and Wages, May 2007

51-9012 Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders

Set up, operate, or tend continuous flow or vat-type equipment; filter presses; shaker screens; centrifuges; condenser tubes; precipitating, fermenting, or evaporating tanks; scrubbing towers; or batch stills. These machines extract, sort, or separate liquids, gases, or solids from other materials to recover a refined product. Include dairy processing equipment operators. Exclude "Chemical Equipment Operators and Tenders" (51-9011).

National estimates for this occupation
Industry profile for this occupation
State profile for this occupation
Metropolitan area profile for this occupation

National estimates for this occupation: Top

Employment estimate and mean wage estimates for this occupation:

Employment (1) Employment
RSE (3)
Mean hourly
wage
Mean annual
wage (2)
Wage RSE (3)
44,310 7.2 % $17.91 $37,260 0.8 %

Percentile wage estimates for this occupation:

Percentile 10% 25% 50%
(Median)
75% 90%
Hourly Wage $10.37 $13.47 $17.28 $21.84 $26.65
Annual Wage (2) $21,570 $28,020 $35,940 $45,420 $55,440

Industry profile for this occupation: Top

Industries with the highest published employment and wages for this occupation are provided. For a list of all industries with employment in this occupation, see the Create Customized Tables function.

Industries with the highest levels of employment in this occupation:

Industry Employment Hourly mean wage Annual mean wage
Beverage Manufacturing 9,850 $20.03 $41,650
Dairy Product Manufacturing 4,390 $16.58 $34,480
Basic Chemical Manufacturing 2,810 $19.49 $40,530
Grain and Oilseed Milling 2,280 $16.28 $33,850
Other Food Manufacturing 1,420 $14.79 $30,750

Top paying industries for this occupation:

Industry Employment Hourly mean wage Annual mean wage
Tobacco Manufacturing 610 $23.20 $48,250
Rubber Product Manufacturing 40 $22.43 $46,650
Management of Companies and Enterprises 280 $21.74 $45,230
Iron and Steel Mills and Ferroalloy Manufacturing 70 $21.25 $44,200
Scientific Research and Development Services 170 $21.19 $44,070

State profile for this occupation: Top

States with the highest published employment concentrations and wages for this occupation are provided. For a list of all States with employment in this occupation, see the Create Customized Tables function.

States with the highest concentration of workers in this occupation:

State Employment Hourly mean wage Annual mean wage Percent of State employment
North Dakota 320 $15.58 $32,410 0.094%
Iowa 1,380 $14.92 $31,040 0.093%
Wisconsin 2,410 $18.53 $38,550 0.087%
Maine 470 $16.94 $35,240 0.078%
Nebraska 570 $13.93 $28,970 0.062%

Top paying States for this occupation:

State Employment Hourly mean wage Annual mean wage Percent of State employment
Wyoming 140 $24.33 $50,610 0.051%
California 6,630 $21.92 $45,600 0.044%
Alaska 140 $21.01 $43,700 0.046%
Massachusetts 310 $20.87 $43,400 0.010%
North Carolina 1,900 $20.79 $43,240 0.047%

Metropolitan area profile for this occupation: Top

Metropolitan areas with the highest published employment concentrations and wages for this occupation are provided. For a list of all Metropolitan areas with employment in this occupation, see the Create Customized Tables function.

Metropolitan areas with the highest concentration of workers in this occupation:

MSA Employment Hourly mean wage Annual mean wage Percent of MSA employment
Napa, CA 880 $24.86 $51,710 1.344%
Harrisonburg, VA 320 $18.65 $38,800 0.539%
Chico, CA 370 $17.32 $36,020 0.500%
Santa Rosa-Petaluma, CA 770 $23.37 $48,600 0.392%
Grand Forks, ND-MN 100 $14.13 $29,390 0.201%

Top paying Metropolitan areas for this occupation:

MSA Employment Hourly mean wage Annual mean wage Percent of MSA employment
Santa Barbara-Santa Maria, CA 160 $26.94 $56,040 0.091%
Gary, IN Metropolitan Division 70 $26.25 $54,590 0.025%
Oshkosh-Neenah, WI 50 $25.51 $53,070 0.056%
San Luis Obispo-Paso Robles, CA 160 $25.19 $52,390 0.148%
Napa, CA 880 $24.86 $51,710 1.344%

About May 2007 National, State, Metropolitan, and Nonmetropolitan Area Occupational Employment and Wage Estimates

These estimates are calculated with data collected from employers in all industry sectors in metropolitan and nonmetropolitan areas in every State and the District of Columbia. The top five employment and wage figures are provided above. The complete list is available in the downloadable Excel files (XLS).

Percentile wage estimates show the percentage of workers in an occupation that earn less than a given wage and the percentage that earn more. The median wage is the 50th percentile wage estimate—50 percent of workers earn less than the median and 50 percent of workers earn more than the median. More about percentile wages.


(1) Estimates for detailed occupations do not sum to the totals because the totals include occupations not shown separately. Estimates do not include self-employed workers.

(2) Annual wages have been calculated by multiplying the hourly mean wage by a "year-round, full-time" hours figure of 2,080 hours; for those occupations where there is not an hourly mean wage published, the annual wage has been directly calculated from the reported survey data.

(3) The relative standard error (RSE) is a measure of the reliability of a survey statistic. The smaller the relative standard error, the more precise the estimate.

Other OES estimates and related information:

May 2007 National Occupational Employment and Wage Estimates

May 2007 State Occupational Employment and Wage Estimates

May 2007 Metropolitan and Nonmetropolitan Area Occupational Employment and Wage Estimates

May 2007 National Industry-Specific Occupational Employment and Wage Estimates

List of Occupations in SOC Code Number Order

List of Occupations in Alphabetical Order

Download May 2007 Occupational Employment and Wage Estimates in Zipped Excel files

Technical notes

Last Modified Date: April 3, 2008

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