Summary of Coal Production and Employment,,,,,,,,,,,,,,,,,,
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,2007,2006,2005,2004,2003,2002,2001,2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990
Production,,,,,,,,,,,,,,,,,,
Production Total (thousand short tons),25346,29740,27743,31420,31596,29956,32774,32834,32294,33747,35837,35590,34099,37129,39317,43024,41954,46917
Surface,9615,11059,11357,10983,10371,9465,10271,9654,9732,8535,8907,10022,8727,9075,9151,8308,7816,7767
Underground,15731,18681,16386,20437,21225,20491,22503,23181,22562,25212,26929,25568,25372,28054,30166,34715,34138,39150
Continuous,12897,13353,13060,14407,14450,14222,15640,15761,16445,13965,13063,11888,12197,14161,17793,21388,23102,26995
Conventional,16,34,302,107,187,-,-,-,30,3943,5982,5755,5318,4222,5051,3834,2786,537
Longwall,2817,5294,2972,5910,6566,6238,6782,6727,7243,6033,7885,7925,7797,9578,7262,9336,8147,9530
Other,-,-,52,13,22,32,81,692,55,61,-,-,61,93,60,48,-,46
Balancing item,-,-,-,-,-,-,-,-,-,-,-,-,-,-,-,109,103,2042
Number of Mines,118,127,132,123,123,137,157,156,161,173,191,191,194,231,237,258,294,340
Surface,47,51,49,46,44,42,48,49,48,46,43,44,43,51,56,62,72,82
Underground,71,76,83,77,79,95,109,107,113,127,148,147,151,180,181,196,222,258
Producer/ Distributor Stocks (thousand short tons),N/A,N/A,N/A,N/A,N/A,N/A,N/A,818,2240,2565,2328,1644,1649,1180,1389,1714,2154,1844
Employment,,,,,,,,,,,,,,,,,,
Number of Miners,4763,5262,5134,4842,4720,5041,5455,5362,5450,5734,6235,6241,6919,8121,8339,9138,10055,10342
Surface,1400,1639,1557,1468,1370,1321,1371,1331,1289,1108,1134,1143,1143,1277,1247,1250,1540,1387
Underground,3363,3623,3577,3374,3350,3720,4084,4031,4161,4626,5101,5098,5776,6844,7092,7888,8515,8955
Productivity (short tons per miner hour),2.47,2.67,2.54,2.95,3.17,2.94,2.94,3.13,3.09,2.76,2.77,2.72,2.5,2.51,2.41,2.37,2.23,2.24
Surface,2.25,3.07,3.13,3.22,3.41,3.25,3.67,3.71,2.73,3.54,3.69,3.79,3.73,3.73,3.55,3.5,2.95,2.89
Underground,2.96,2.48,2.25,2.83,3.07,2.81,2.69,2.94,2.87,2.56,2.56,2.44,2.25,2.27,2.19,2.2,2.12,2.14
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Note:,,,,,,,,,,,,,,,,,,
"Mines that produce greater than 50 percent of their coal by conventional mining methods or mines that produce coal using shortwall, scoop loading, hand loading, or other methods or a 50/50 percent continuous conventional split in mining methods, or mines that produce less than 10,000 short tons, which are not required to provide data.",,,,,,,,,,,,,,,,,,
"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 2002-2006: 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.",,,,,,,,,,,,,,,,,,