Summary of Coal Production and Employment
| 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | |
| Production | |||||||||||||||||||
| Production (thousand short tons) | 24,171 | 24,906 | 29,429 | 26,938 | 30,487 | 31,683 | 31,746 | 32,601 | 33,210 | 32,254 | 34,002 | 36,889 | 36,782 | 35,917 | 38,805 | 40,091 | 42,564 | 42,336 | 46,500 |
| Surface Operations | 8,133 | 8,882 | 10,543 | 10,427 | 10,022 | 10,273 | 8,848 | 9,933 | 9,633 | 9,159 | 8,042 | 8,900 | 9,602 | 8,909 | 9,371 | 9,543 | 8,174 | 8,087 | 7,646 |
| Underground Mines | 16,037 | 16,023 | 18,886 | 16,510 | 20,464 | 21,172 | 22,897 | 22,466 | 23,577 | 23,095 | 25,960 | 27,989 | 27,180 | 27,008 | 29,435 | 30,548 | 34,389 | 34,249 | 38,854 |
| Continuous Miner | 13,018 | 13,675 | 14,457 | 13,916 | 15,322 | 15,417 | 17,557 | 16,964 | 17,825 | 17,843 | 19,238 | 21,096 | 22,133 | 21,002 | 21,271 | 23,124 | 24,549 | 25,023 | 27,339 |
| Longwall | 3,019 | 2,348 | 4,429 | 2,594 | 5,142 | 5,755 | 5,341 | 5,704 | 5,752 | 5,192 | 6,359 | 6,801 | 4,913 | 5,936 | 7,317 | 7,247 | 9,322 | 8,303 | 9,998 |
| Other | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 60 | 363 | 91 | 134 | 71 | 846 | 177 | 518 | 922 | 1518 |
| Number of Mines | 261 | 252 | 269 | 265 | 292 | 295 | 323 | 327 | 342 | 361 | 352 | 356 | 325 | 373 | 421 | 407 | 424 | 483 | 489 |
| Number of Producing Mines | 139 | 144 | 162 | 156 | 167 | 152 | 173 | 204 | 205 | 201 | 220 | 237 | 226 | 244 | 285 | 278 | 299 | 353 | N/A |
| Employment | |||||||||||||||||||
| Production Employees | 4,394 | 4,358 | 4,782 | 4,764 | 4,501 | 4,353 | 4,811 | 5,261 | 4,928 | 5,456 | 5,802 | 6,534 | 6,093 | 6,795 | 8,318 | 9,146 | 9,009 | 9,756 | 10,265 |
| Surface Mines | 1,651 | 1,571 | 1,836 | 1,890 | 1,881 | 1,669 | 1,879 | 1,872 | 1,232 | 1,240 | 1,235 | 1,333 | 1,141 | 1,245 | 1,542 | 1,448 | 1,329 | 1,615 | 1,517 |
| Underground Operations | 2,743 | 2,787 | 2,946 | 2,874 | 2,620 | 2,684 | 2,932 | 3,389 | 3,696 | 4,216 | 4,567 | 5,201 | 4,952 | 5,730 | 6,776 | 7,698 | 7,680 | 8,141 | 8,748 |
| Production Wages (thousands of dollars) | 248,673 | 211,621 | 238,020 | 208,866 | 197,859 | 179,978 | 175,734 | 194,741 | 176,094 | 165,138 | 190,957 | 206,296 | 204,703 | 220,406 | 244,843 | 246,332 | 265,017 | 268,177 | 287,665 |
| Total Worker Hours | 9,358,362 | 8,822,478 | 9,774,608 | 9,469,502 | 9,036,446 | 8,584,102 | 11,450,214 | 9,786,846 | 8,816,166 | 9,001,417 | 10,506,272 | 11,491,823 | 11,453,486 | 12,143,903 | 14,813,944 | 14,583,278 | 15,964,553 | 16,962,239 | 17,826,603 |
| Surface Mines | 3,386,381 | 3,406,555 | 3,979,172 | 4,107,780 | 3,687,239 | 3,388,074 | 3,436,973 | 3,460,743 | 2,011,925 | 2,145,853 | 2,298,080 | 2,248,495 | 2,496,162 | 2,140,749 | 2,391,917 | 2,500,111 | 2,197,569 | 2,806,716 | 2,403,259 |
| Underground Operations | 5,971,981 | 5,415,923 | 5,795,436 | 5,361,722 | 5,349,207 | 5,196,028 | 8,013,241 | 6,326,103 | 6,804,241 | 6,855,564 | 8,208,192 | 9,243,328 | 9,047,324 | 10,003,154 | 12,422,027 | 12,083,167 | 13,766,984 | 14,155,523 | 15,423,344 |
| Average Productivity (tons per worker hour) | 2.58 | 2.82 | 3.01 | 2.84 | 3.37 | 3.66 | 2.77 | 3.31 | 3.77 | 3.58 | 3.24 | 3.21 | 3.19 | 2.96 | 2.62 | 2.75 | 2.67 | 2.50 | 2.61 |
| Surface Mines | 2.4 | 2.61 | 2.65 | 2.5 | 2.72 | 3.03 | 2.57 | 2.87 | 4.79 | 4.27 | 3.50 | 3.96 | 3.85 | 4.16 | 3.92 | 3.82 | 3.72 | 2.88 | 3.18 |
| Underground Operations | 2.69 | 2.96 | 3.26 | 3.11 | 3.83 | 4.07 | 2.86 | 3.55 | 3.88 | 3.37 | 3.16 | 3.03 | 3.00 | 2.70 | 2.37 | 2.53 | 2.50 | 2.42 | 2.52 |