1983-2007, Number of Mining Employees, Total Number of Hours Worked, and Number of Full-Time Equivalent Employees by Underground/Surface Work Location by Year; Excludes Office Employees; Data Source: MSHA
Sum
Year Underground/Surface work location Number of employees Employee hours Full-time equivalent employees
1983 Underground 105,518 183,510,810 91,755
Surface 268,396 475,065,991 237,533
Total 373,914 658,576,801 329,288
1984 Underground 109,402 196,849,735 98,425
Surface 278,935 508,276,231 254,138
Total 388,337 705,125,966 352,563
1985 Underground 103,297 188,118,683 94,059
Surface 273,013 493,085,151 246,543
Total 376,310 681,203,834 340,602
1986 Underground 95,497 174,827,405 87,414
Surface 262,263 477,647,125 238,824
Total 357,760 652,474,530 326,237
1987 Underground 87,678 163,081,304 81,541
Surface 261,299 480,851,605 240,426
Total 348,977 643,932,909 321,966
1988 Underground 85,109 159,803,188 79,902
Surface 268,730 496,104,970 248,052
Total 353,839 655,908,158 327,954
1989 Underground 83,494 157,042,823 78,521
Surface 276,135 506,122,818 253,061
Total 359,629 663,165,641 331,583
1990 Underground 84,720 162,603,128 81,302
Surface 280,062 509,778,293 254,889
Total 364,782 672,381,421 336,191
1991 Underground 77,175 148,993,479 74,497
Surface 272,207 485,548,664 242,774
Total 349,382 634,542,143 317,271
1992 Underground 72,323 138,544,192 69,272
Surface 265,264 474,546,699 237,273
Total 337,587 613,090,891 306,545
1993 Underground 63,663 118,617,630 59,309
Surface 258,291 463,486,612 231,743
Total 321,954 582,104,242 291,052
1994 Underground 65,473 124,458,125 62,229
Surface 266,133 477,311,335 238,656
Total 331,606 601,769,460 300,885
1995 Underground 61,534 119,471,864 59,736
Surface 263,061 477,489,493 238,745
Total 324,595 596,961,357 298,481
1996 Underground 58,898 117,557,570 58,779
Surface 260,643 479,517,532 239,759
Total 319,541 597,075,102 298,538
1997 Underground 58,123 116,164,608 58,082
Surface 267,413 483,296,428 241,648
Total 325,536 599,461,036 299,731
1998 Underground 56,262 111,751,258 55,876
Surface 264,912 480,110,133 240,055
Total 321,174 591,861,391 295,931
1999 Underground 51,564 102,383,418 51,192
Surface 265,770 474,307,797 237,154
Total 317,334 576,691,215 288,346
2000 Underground 48,444 95,128,274 47,564
Surface 264,279 468,654,511 234,327
Total 312,723 563,782,785 281,891
2001 Underground 50,467 100,299,668 50,150
Surface 262,089 461,368,170 230,684
Total 312,556 561,667,838 280,834
2002 Underground 47,485 92,050,735 46,025
Surface 248,541 433,975,618 216,988
Total 296,026 526,026,353 263,013
2003 Underground 44,125 89,556,629 44,778
Surface 243,392 424,226,502 212,113
Total 287,517 513,783,131 256,892
2004 Underground 46,360 96,365,895 48,183
Surface 249,457 445,677,193 222,839
Total 295,817 542,043,088 271,022
2005 Underground 50,732 106,081,050 53,041
Surface 260,395 471,128,545 235,564
Total 311,127 577,209,595 288,605
2006 Underground 53,620 112,092,026 56,046
Surface 275,162 491,669,814 245,835
Total 328,782 603,761,840 301,881
2007 Underground 55,617 114,443,292 57,222
Surface 286,491 497,389,379 248,695
Total 342,108 611,832,671 305,916
Total Underground 1,716,580 3,289,796,789 1,644,898
Surface 6,642,333 11,936,636,609 5,968,318
Total 8,358,913 15,226,433,398 7,613,217

Page last updated: April 17, 2009
Page last reviewed: March 30, 2009
Content Source: National Institute for Occupational Safety and Health (NIOSH) Mining Division