2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990
Production
Production Total (thousand short tons) 27,743 31,420 31,596 29,956 32,774 32,834 32,294 33,747 35,837 35,590 34,099 37,129 39,317 43,024 41,954 46,917
Surface 11,357 10,983 10,371 9,465 10,271 9,654 9,732 8,535 8,907 10,022 8,727 9,075 9,151 8,308 7,816 7,767
Underground 16,386 20,437 21,225 20,491 22,503 23,181 22,562 25,212 26,929 25,568 25,372 28,054 30,166 34,715 34,138 39,150
Continuous 13,060 14,407 14,450 14,222 15,640 15,761 16,445 13,965 13,063 11,888 12,197 14,161 17,793 21,388 23,102 26,995
Conventional 302 107 187 - - - 30 3,943 5,982 5,755 5,318 4,222 5,051 3,834 2,786 537
Longwall 2,972 5,910 6,566 6,238 6,782 6,727 7,243 6,033 7,885 7,925 7,797 9,578 7,262 9,336 8,147 9,530
Other 52 13 22 32 81 692 55 61 - - 61 93 60 48 - 46
Balancing item - - - - - - - - - - - - - 109 103 2,042
Number of Mines 132 123 123 137 157 156 161 173 191 191 194 231 237 258 294 340
Surface 49 46 44 42 48 49 48 46 43 44 43 51 56 62 72 82
Underground 83 77 79 95 109 107 113 127 148 147 151 180 181 196 222 258
Producer/ Distributor Stocks (thousand short tons) N/A N/A N/A N/A N/A 818 2,240 2,565 2,328 1,644 1,649 1,180 1,389 1,714 2,154 1,844
Employment
Number of Miners 5,134 4,842 4,720 5,041 5,455 5,362 5,450 5,734 6,235 6,241 6,919 8,121 8,339 9,138 10,055 10,342
Surface 1,557 1,468 1,370 1,321 1,371 1,331 1,289 1,108 1,134 1,143 1,143 1,277 1,247 1,250 1,540 1,387
Underground 3,577 3,374 3,350 3,720 4,084 4,031 4,161 4,626 5,101 5,098 5,776 6,844 7,092 7,888 8,515 8,955
Productivity (short tons per miner hour) 2.54 2.95 3.17 2.94 2.94 3.13 3.09 2.76 2.77 2.72 2.5 2.51 2.41 2.37 2.23 2.24
Surface 3.13 3.22 3.41 3.25 3.67 3.71 2.73 3.54 3.69 3.79 3.73 3.73 3.55 3.5 2.95 2.89
Underground 2.25 2.83 3.07 2.81 2.69 2.94 2.87 2.56 2.56 2.44 2.25 2.27 2.19 2.20 2.12 2.14

 

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Note:

Number of Miners excludes mines producing less than 10,000 short tons and preparation plants with less than 5,000 employee hours, which are not required to provide this data.

  • Productivity (short tons per miner hour) is calculated by dividing the total coal production by the total direct labor hours worked by all mine employees engaged in production, preparation, processing, development, maintenance, repair, and shop or yard work at mining operations. Calculation excludes mines producing less than 10,000 short tons and preparation plants with less than 5,000 employee hours, which are not required to provide this data.
  • "Other": Indicates mines that produce coal using shortwall, scoop loading, hand loading, or other mining methods or a 50/50 percent continuous/ conventional split in mining method.
  • "Balancing item": Complete data regarding mining method employed at mines producing less than 10,000 short tons per annum is not available from EIA publications, 1990 to 1992. Balancing item calculated by VCCER.
  • Continuous production at underground mines indicates data for mines that produce greater than 50 percent of coal by continuous mining method.
  • Conventional production at underground mines indicates data for mines that produce greater than 50 percent of coal by conventional mining method.
  • Longwall production at underground mines indicates data for mines that have any production from longwall mining method. A typical longwall mining operation uses 80 percent longwall mining and 20 percent continuous mining.
  • Production figures exclude silt, culm, refuse, bank, slurry dam, and dredge operations.
  • Totals may not equal sum of components due to independent rounding.

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    Source:

  • For Years 2002-2005: Tables 1, 3, 18 and 21, Annual Coal Report, EIA.
  • For 2001:Tables 1, 20, 22, Coal Annual Report 2001, EIA
  • For 2000: Tables 3, 5, 40, 41 and A14, Coal Industry Annual, 2000, EIA
  • For1999, 1998, 1997, and 1994: Table A14, Coal Industry Annual, EIA.
  • For1993 to 1999: Table 5, Table 3, Table 40, Table 41,Coal Industry Annual, and Table 12, Coal Production, 1990 to 1992; EIA.
  • For 1993 to 1999: Table 3, Coal Industry Annual, EIA. Data for 1990 to 1992 is from page 96, State Coal Profiles, January 1994, EIA.
  • For 1994 and 1999: Tables 40 and 41, Coal Industry Annual, EIA.

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