Virginia Tech Virginia Center for Coal and Energy Research
Coal Industry Data Organized by Mine Size and Year

1990
1991
1992
1993
1994
1995
1996

  1990
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 112 72 100 112 78 12 486
Surface 45 35 25 25 13 2 145
Deep 67 37 75 87 65 10 341
% of Total 14% 8% 15% 18% 13% 2% 100
Tons Producted 0  286,505  2,742,845  23,064,841  5,451,833  15,090,683  46,636,707 
% of Total 0 1 6 49 12 32 100
Employees 38  471  1,386  4,303  1,407  2,656  10,261 
% of Total 0 5 14 42 14 26 100
Wages ($1,000) 163  2,178  15,941  137,051  30,335  101,995  287,665 
% for Total 0.00 0.01 0.06 0.48 0.11 0.35 1
Hours Worked 16,479  155,321  1,219,336  8,350,664  2,369,167  5,715,636  17,826,603 
Productivity (t/hr) 0 0.54 0.44 0.36 0.43 0.38 0.36


  1991
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 119 77 103 97 79 9 484
Surface 42 35 39 24 14 1 155
Deep 77 42 64 73 65 8 329
% of Total 16% 9% 13% 15% 13% 2% 100
Tons Producted 0  280,221  2,573,733  22,035,933  5,480,330  11,965,927  42,336,144 
Tons Produced 0 1 6 52 13 28 100
Employees 51  588  1,385  3,784  1,571  2,377  9,756 
% of Total 1 6 14 39 16 24 100
Wages ($1,000) 666  2,836  14,857  127,532  29,188  93,099  268,177 
% for Total 0.00 0.01 0.06 0.48 0.11 0.35 1
Hours Worked 44,983  218,807  1,291,995  7,719,997  2,589,323  5,097,134  16,962,239 
Productivity (t/hr) 0 0.78 0.50 0.35 0.47 0.43 0.42


  1992
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 125 66 65 93 61 12 422
Surface 41 30 17 23 11 1 123
Deep 84 36 48 70 50 11 299
% of Total 20% 9% 11% 17% 12% 3% 100
Tons Producted 0  296,646  1,834,821  21,838,564  4,465,810  14,127,685  42,563,526 
Tons Produced 0 1 4 51 10 33 100
Employees 41  440  892  3,744  1,255  2,637  9,009 
% of Total 0 5 10 42 14 29 100
Wages ($1,000) 336  1,714  11,069  124,095  25,226  102,577  265,017 
% for Total 0.00 0.01 0.04 0.47 0.10 0.39 1
Hours Worked 22,588  154,646  856,666  7,486,233  1,871,979  5,572,441  15,964,553 
Productivity (t/hr) 0 0.52 0.47 0.34 0.42 0.39 0.36


  1993
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 132 51 66 91 56 16 412
Surface 33 16 17 25 7 4 102
Deep 99 35 49 66 49 12 310
% of Total 24% 8% 12% 16% 12% 3% 100
Tons Producted 0  198,199  1,920,169  20,706,046  4,053,864  13,265,244  40,143,522 
Tons Produced 0 0 5 52 10 33 100
Employees 67  425  881  3,661  1,313  2,814  9,161 
% of Total 1 5 10 40 14 31 100
Wages ($1,000) 1,095  3,163  11,972  115,639  27,940  86,810  246,620 
% for Total 0.00 0.01 0.05 0.47 0.11 0.35 1
Hours Worked 40,175  239,225  923,473  6,901,278  1,846,177  4,660,026  14,610,354 
Productivity (t/hr) 0 1.21 0.48 0.33 0.46 0.35 0.47


  1994
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 137 55 67 81 48 18 406
Surface 28 20 17 23 6 5 99
Deep 109 35 50 58 42 13 307
% of Total 27% 9% 12% 14% 10% 3% 100
Tons Producted 0  210,146  1,804,742  17,695,489  3,485,044  15,609,666  38,805,087 
Tons Produced 0 1 5 46 9 40 100
Employees 119  459  1,057  2,974  923  2,782  8,314 
% of Total 1 6 13 36 11 33 100
Wages ($1,000) 352  5,270  29,152  90,616  19,525  123,099  268,014 
% for Total 0.00 0.02 0.11 0.34 0.07 0.46 1
Hours Worked 25,446  138,477  800,993  6,799,800  5,231,835  5,064,932  18,061,483 
Productivity (t/hr) 0 0.66 0.44 0.38 1.50 0.32 0.55


  1995
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 115 47 47 79 54 10 352
Surface 26 16 9 21 7 4 83
Deep 89 31 38 58 47 6 269
% of Total 25% 9% 11% 16% 13% 2% 100
Tons Producted 0  154,008  1,267,286  18,610,497  3,923,766  11,946,352  35,901,909 
Tons Produced 0 0 4 52 11 33 100
Employees 107  354  635  3,016  1,173  1,598  6,883 
% of Total 2 5 9 44 17 23 100
Wages ($1,000) 679  1,339  7,932  105,426  27,169  77,771  220,316 
% for Total 0.00 0.01 0.04 0.48 0.12 0.35 1
Hours Worked 53,147  108,300  601,695  6,005,891  1,805,128  3,562,945  12,137,106 
Productivity (t/hr) 0 0.70 0.47 0.32 0.46 0.30 0.38


  1996
Label 0 1-9,999 10,000-49,999 50,000-99,999 100,000-499,999 Over 500,000 Total
Number of Mines 99 48 51 72 40 15 325
Surface 21 23 12 19 4 6 85
Deep 78 25 39 53 36 9 240
% of Total 24% 8% 12% 16% 11% 3% 100
Tons Producted 0  186,508  1,433,798  16,507,450  2,925,249  15,677,531  36,730,536 
Tons Produced 0 1 4 45 8 43 100
Employees 117  307  695  2,579  693  1,702  6,093 
% of Total 2 5 11 42 11 28 100
Wages ($1,000) 1,540  1,524  8,942  91,736  18,587  82,374  204,702 
% for Total 0.01 0.01 0.04 0.45 0.09 0.40 1
Hours Worked 73,365  134,031  642,094  5,458,054  1,303,018  3,932,924  11,543,486 
Productivity (t/hr) 0 0.72 0.45 0.33 0.45 0.25 0.37