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CWXSP: Estimated number of actively employed workers at underground mines and number of miners examined, 1970-2006

Data

* Average number employed during the period, based upon quarterly reports by coal mine operators to the Mine Safety and Health Administration (MSHA). Because of hiring and layoffs, the total number of individuals who worked at underground mines in any period exceeds the average employment.

Note: See appendices for source description and methods.

Source: NIOSH Coal Workers’ X-ray Surveillance Program (CWXSP). MSHA coal mine employment data.

Reference Number: 2007F02-06

Date Posted: June 2008

Archived Version

 
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