The annual and hourly salary statistics of crushing, grinding, and polishing machine setters, operators, and tenders in Columbia, South Carolina are shown in Table 1 and Table 2, respectively. The wage data of crushing, grinding, and polishing machine setters, operators, and tenders in Columbia is based on the national compensation survey conducted by the U.S. Bureau of Labor Statistics in 2017 and published in April 2018 [1].
| Percentile Bracket | Average Annual Salary |
|---|---|
| 10th Percentile Wage | $18,470 |
| 25th Percentile Wage | $20,580 |
| 50th Percentile Wage | $22,490 |
| 75th Percentile Wage | $24,400 |
| 90th Percentile Wage | $33,580 |
Table 1 shows the average annual salary for crushing, grinding, and polishing machine setters, operators, and tenders in Columbia, South Carolina in 5 percentile scales. The average annual salary for the 90th percentile (the top 10 percent of the highest paid) is $33,580. The median (50th percentile) annual salary is $22,490. The average annual salary for the bottom 10 percent earners is $18,470.
The table and chart below show the trend of the median salary of crushing, grinding, and polishing machine setters, operators, and tenders from 2012 to 2017. Note that there is no salary data for some years between 2012 and 2017.
| Year | Median Salary | Growth | 2-Year Growth |
|---|---|---|---|
| 2014 | $22,490 | 3.02% | -2.62% |
| 2013 | $21,810 | -5.82% | - |
| 2012 | $23,080 | - | - |
From Table 3 we note that with a median annual salary of $22,490, Columbia is the lowest paying city for crushing, grinding, and polishing machine setters, operators, and tenders in state of South Carolina, following city of Augusta-Richmond County (median annual salary of $42,740). Also we note that in comparison, the annual salary of crushing, grinding, and polishing machine setters, operators, and tenders in Columbia is about 47.4 percent (47.4%) lower than that of the highest paying city Augusta-Richmond County.