Employment and Wages for NAICS 2121 (Coal Mining by Private Owners)
| Year | Number of Establishments | Total Employees | Average Weekly Wage | Average Annual Pay |
| 2007 | 89 | 4,168 | 1,176 | 61,127 |
| 2006 | 89 | 4,381 | 1,154 | 60,033 |
| 2005 | 101 | 4,379 | 1,110 | 57,695 |
| 2004 | 99 | 4,202 | 1,072 | 55,731 |
| 2003 | 102 | 4,197 | 979 | 50,927 |
| 2002 | 118 | 4,717 | 905 | 47,042 |
| 2001 | 136 | 5,265 | 906 | 47,116 |