"10% (Low)" indicates that 10% of workers earned less and 90% earned more.
"50% (Median)" indicates that 50% of workers earned less and 50% earned more.
"90% (High)" indicates that 90% of workers earned less and 10% earned more.
"N/A" indicates that data is not available
* The annual salary and wage data presented above represents U.S. based workers with full-time employment and year-round schedules.
Roof Bolters, Mining Operate machinery to install roof support bolts in underground mine.
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