Table 03. Average
Number of EMPLOYEE Hours at Metallic
Operations in the United States,
by Primary Activity, 1978-2007
Year
|
Underground
Mines
|
Surface
Mines
|
|
Underground
|
Surf at UG
|
Total
|
Strip
|
Dredge
|
Other
|
Total
|
1978
|
36,742,707
|
8,038,701
|
44,781,408
|
48,522,531
|
805,528
|
138,549
|
49,466,608
|
1979
|
38,831,160
|
9,207,178
|
48,038,338
|
52,662,353
|
708,135
|
136,834
|
53,507,322
|
1980
|
38,307,900
|
10,283,340
|
48,591,240
|
49,575,691
|
689,497
|
200,024
|
50,465,212
|
1981
|
38,686,156
|
10,740,801
|
49,426,957
|
51,874,766
|
665,049
|
31,442
|
52,571,257
|
1982
|
24,357,362
|
7,256,644
|
31,614,006
|
30,279,970
|
696,794
|
12,996
|
36,989,760
|
19831
|
16,361,866
|
5,277,736
|
21,639,602
|
23,640,652
|
682,118
|
-
|
24,322,770
|
1984
|
16,426,707
|
4,225,864
|
20,652,571
|
22,978,455
|
668,343
|
-
|
23,646,798
|
1985
|
14,298,452
|
3,644,977
|
17,943,429
|
19,640,548
|
682,147
|
-
|
20,322,695
|
1986
|
13,060,046
|
3,156,922
|
16,216,968
|
19,055,356
|
790,254
|
-
|
19,845,610
|
1987
|
13,010,347
|
3,155,772
|
16,166,119
|
21,934,385
|
968,112
|
-
|
22,902,497
|
1988
|
14,713,725
|
3,497,822
|
18,211,547
|
27,417,137
|
1,124,143
|
-
|
28,541,290
|
1989
|
14,865,632
|
3,870,086
|
18,735,718
|
31,944,491
|
1,002,126
|
-
|
32,946,617
|
1990
|
14,923,497
|
4,105,080
|
19,028,577
|
34,982,186
|
937,034
|
-
|
35,919,220
|
1991
|
13,183,883
|
3,580,859
|
16,764,742
|
34,990,660
|
843,877
|
-
|
35,834,537
|
1992
|
11,452,301
|
3,657,552
|
15,109,853
|
34,140,305
|
856,839
|
-
|
34,997,144
|
1993
|
10,223,218
|
3,149,483
|
13,372,701
|
34,466,673
|
845,110
|
152,202
|
35,463,985
|
1994
|
10,668,653
|
2,687,313
|
13,355,966
|
33,080,463
|
703,042
|
1,350,270
|
35,133,775
|
1995
|
11,744,082
|
2,836,751
|
14,580,833
|
35,003,079
|
721,156
|
1,446,697
|
37,170,932
|
1996
|
12,189,920
|
2,809,491
|
14,999,411
|
36,794,604
|
799,379
|
1,227,202
|
38,821,185
|
1997
|
12,472,635
|
2,700,358
|
15,172,993
|
34,636,009
|
790,174
|
1,049,565
|
36,475,748
|
1998
|
11,523,977
|
2,258,278
|
13,782,255
|
30,597,427
|
670,379
|
578,780
|
31,846,586
|
1999
|
9,895,473
|
1,968,286
|
11,863,759
|
27,444,739
|
631,235
|
460,252
|
28,536,226
|
2000
|
8,813,437
|
2,034,500
|
10,847,937
|
24,931,485
|
566,542
|
478,181
|
25,976,208
|
2001
|
8,902,189
|
1,728,611
|
10,630,800
|
23,295,019
|
469,091
|
220,635
|
23,984,745
|
2002
|
7,438,917
|
1,401,704
|
8,840,621
|
19,801,231
|
429,121
|
119,294
|
20,349,646
|
2003
|
7,231,668
|
1,471,194
|
8,702,862
|
18,424,119
|
396,968
|
88,949
|
18,910,036
|
2004
|
7,619,658
|
1,579,432
|
9,199,090
|
20,462,346
|
208,944
|
124,258
|
20,795,548
|
2005
|
8,362,302
|
1,648,862
|
10,011,164
|
21,352,736
|
207,236
|
176,821
|
21,736,793
|
2006
|
9,149,807
|
1,788,270
|
10,938,077
|
23,829,786
|
212,776
|
283,975
|
24,326,537
|
2007
|
10,873,661
|
1,855,460
|
12,729,121
|
26,615,585
|
217,310
|
246,076
|
27,078,971
|
Table
03. Average Number of EMPLOYEE Hours at
Metallic
Operations
in the United States,
by Primary Activity, 1978-2007 –
continued:
Year
|
Total
Mining
|
Indp
Shops/Yrds
|
Mills
|
Total
w/o Office
|
Office
|
Grand
Total
|
1978
|
94,248,016
|
5,138,448
|
56,781,578
|
156,168,042
|
22,191,239
|
178,359,281
|
1979
|
101,545,660
|
4,308,755
|
64,360,622
|
170,215,037
|
23,446,331
|
193,661,368
|
1980
|
99,056,452
|
2,554,817
|
62,302,837
|
163,914,106
|
23,660,379
|
187,574,485
|
1981
|
101,998,214
|
2,853,657
|
67,950,957
|
172,802,828
|
24,320,947
|
197,123,775
|
1982
|
62,603,766
|
1,457,951
|
43,777,555
|
107,839,272
|
18,111,915
|
125,951,187
|
19831
|
45,962,372
|
1,497,871
|
35,730,550
|
83,190,793
|
13,282,409
|
96,473,202
|
1984
|
44,299,369
|
1,783,129
|
36,561,568
|
82,644,066
|
11,097,975
|
93,742,041
|
1985
|
38,266,124
|
1,646,531
|
31,735,952
|
71,648,607
|
9,359,283
|
81,007,890
|
1986
|
36,062,578
|
1,104,026
|
27,789,010
|
64,955,614
|
8,508,370
|
73,463,984
|
1987
|
39,068,616
|
1,143,877
|
31,396,059
|
71,608,552
|
8,823,654
|
80,432,206
|
1988
|
46,752,837
|
737,820
|
35,964,028
|
83,454,685
|
10,255,564
|
93,710,249
|
1989
|
51,682,335
|
754,830
|
40,484,259
|
92,921,424
|
11,712,040
|
104,633,464
|
1990
|
54,947,797
|
761,764
|
41,102,365
|
96,811,926
|
11,912,388
|
108,724,314
|
1991
|
52,599,279
|
756,745
|
40,924,642
|
94,280,666
|
12,106,943
|
106,387,609
|
1992
|
50,106,997
|
733,390
|
39,753,612
|
90,593,999
|
12,044,846
|
102,638,845
|
1993
|
48,836,686
|
715,139
|
38,135,605
|
87,687,430
|
10,407,227
|
98,094,657
|
1994
|
48,489,741
|
746,328
|
37,041,696
|
86,277,765
|
10,234,627
|
96,512,392
|
1995
|
51,751,765
|
891,465
|
37,889,252
|
90,532,482
|
10,390,954
|
100,923,436
|
1996
|
53,820,596
|
724,199
|
38,926,602
|
93,471,397
|
10,591,047
|
104,062,444
|
1997
|
51,648,741
|
734,372
|
38,496,224
|
90,879,337
|
10,791,905
|
101,671,242
|
1998
|
45,628,841
|
688,676
|
36,158,851
|
82,476,368
|
10,505,387
|
92,981,755
|
1999
|
40,399,985
|
624,715
|
33,178,151
|
74,202,851
|
9,153,071
|
83,355,922
|
2000
|
36,824,145
|
649,285
|
31,294,459
|
68,767,889
|
8,673,170
|
77,441,059
|
2001
|
34,615,545
|
570,325
|
26,094,494
|
61,280,364
|
7,512,221
|
68,792,585
|
2002
|
29,190,267
|
542,793
|
22,142,043
|
51,875,103
|
6,623,490
|
58,498,593
|
2003
|
27,612,898
|
485,376
|
20,837,286
|
48,935,560
|
6,602,093
|
55,537,653
|
2004
|
29,994,638
|
423,714
|
21,763,920
|
52,182,272
|
7,298,949
|
59,481,221
|
2005
|
31,747,957
|
471,395
|
23,327,566
|
55,546,918
|
7,861,474
|
63,408,392
|
2006
|
35,264,614
|
410,803
|
23,910,753
|
59,586,170
|
8,358,091
|
67,944,261
|
2007
|
39,808,092
|
447,712
|
26,192,750
|
66,448,554
|
9,043,003
|
75,491,557
|
1Beginning in 1983, only operator data are
available at this level of detail.
|