Table 03. Average
Number of Employees at Anthracite Mines in the United States,
by Primary Activity,
1978-2007
|
Year
|
Underground
Mines
|
Surface
Mines
|
|
|
Underground
|
Surf
at UG
|
Total
|
Strip
|
Auger
|
Culm
Bank
|
Dredge
|
Total
|
|
1978
|
468
|
83
|
551
|
1,289
|
-
|
206
|
7
|
1,502
|
|
1979
|
416
|
58
|
474
|
1,063
|
-
|
221
|
7
|
1,291
|
|
1980
|
426
|
56
|
482
|
1,418
|
-
|
202
|
8
|
1,628
|
|
1981
|
482
|
78
|
560
|
1,516
|
-
|
192
|
9
|
1,717
|
|
1982
|
513
|
90
|
603
|
1,412
|
-
|
172
|
11
|
1,595
|
|
19831
|
479
|
95
|
574
|
1,133
|
-
|
184
|
12
|
1,329
|
|
1984
|
513
|
110
|
623
|
1,129
|
-
|
199
|
13
|
1,341
|
|
1985
|
482
|
107
|
589
|
917
|
-
|
187
|
15
|
1,119
|
|
1986
|
515
|
123
|
638
|
976
|
-
|
216
|
13
|
1,205
|
|
1987
|
419
|
120
|
539
|
761
|
-
|
179
|
12
|
952
|
|
1988
|
391
|
128
|
519
|
683
|
-
|
180
|
9
|
872
|
|
1989
|
330
|
108
|
438
|
724
|
-
|
154
|
7
|
885
|
|
1990
|
317
|
99
|
416
|
695
|
-
|
250
|
4
|
949
|
|
1991
|
293
|
95
|
388
|
665
|
-
|
273
|
5
|
943
|
|
1992
|
267
|
97
|
364
|
625
|
-
|
309
|
4
|
938
|
|
1993
|
222
|
75
|
297
|
554
|
-
|
372
|
3
|
929
|
|
1994
|
207
|
73
|
280
|
598
|
-
|
301
|
4
|
903
|
|
1995
|
202
|
65
|
267
|
522
|
-
|
327
|
2
|
851
|
|
1996
|
186
|
60
|
246
|
572
|
-
|
319
|
3
|
894
|
|
1997
|
187
|
66
|
253
|
630
|
-
|
306
|
2
|
938
|
|
1998
|
180
|
70
|
250
|
657
|
-
|
248
|
-
|
905
|
|
1999
|
161
|
60
|
221
|
630
|
-
|
173
|
-
|
803
|
|
2000
|
130
|
55
|
185
|
539
|
-
|
199
|
-
|
738
|
|
2001
|
127
|
41
|
168
|
373
|
-
|
171
|
-
|
544
|
|
2002
|
114
|
40
|
154
|
353
|
-
|
127
|
-
|
480
|
|
2003
|
99
|
44
|
143
|
351
|
-
|
123
|
-
|
474
|
|
2004
|
91
|
40
|
131
|
388
|
-
|
129
|
-
|
517
|
|
2005
|
82
|
39
|
121
|
389
|
-
|
147
|
-
|
536
|
|
2006
|
91
|
39
|
130
|
377
|
-
|
156
|
-
|
533
|
|
2007
|
86
|
28
|
114
|
398
|
-
|
174
|
-
|
572
|
Table 03. Average Number of
Employees at Anthracite Mines in the United States,
by Primary Activity,
1978-2007 continued:
Year
|
Total
Mining
|
Indp Shops/Yrds
|
Prep
Plants
|
Total
w/o Office
|
Office
|
Grand
Total
|
|
1978
|
2,053
|
60
|
946
|
3,059
|
118
|
3,177
|
|
1979
|
1,765
|
39
|
868
|
2,672
|
105
|
2,777
|
|
1980
|
2,110
|
80
|
1,103
|
3,293
|
115
|
3,408
|
|
1981
|
2,277
|
83
|
1,139
|
3,499
|
122
|
3,621
|
|
1982
|
2,198
|
59
|
1,141
|
3,398
|
142
|
3,540
|
|
19831
|
1,903
|
52
|
853
|
2,808
|
121
|
2,929
|
|
1984
|
1,964
|
50
|
895
|
2,909
|
135
|
3,044
|
|
1985
|
1,708
|
49
|
885
|
2,642
|
148
|
2,790
|
|
1986
|
1,843
|
61
|
937
|
2,841
|
146
|
2,987
|
|
1987
|
1,491
|
45
|
837
|
2,373
|
120
|
2,493
|
|
1988
|
1,391
|
44
|
846
|
2,281
|
111
|
2,392
|
|
1989
|
1,323
|
37
|
760
|
2,120
|
114
|
2,234
|
|
1990
|
1,365
|
44
|
750
|
2,159
|
126
|
2,285
|
|
1991
|
1,331
|
41
|
703
|
2,075
|
126
|
2,201
|
|
1992
|
1,302
|
23
|
666
|
1,991
|
137
|
2,128
|
|
1993
|
1,226
|
23
|
562
|
1,811
|
140
|
1,951
|
|
1994
|
1,183
|
29
|
616
|
1,828
|
138
|
1,966
|
|
1995
|
1,118
|
25
|
572
|
1,715
|
144
|
1,859
|
|
1996
|
1,140
|
22
|
553
|
1,715
|
141
|
1,856
|
|
1997
|
1,191
|
16
|
640
|
1,847
|
145
|
1,992
|
|
1998
|
1,155
|
10
|
563
|
1,728
|
146
|
1,874
|
|
1999
|
1,024
|
9
|
567
|
1,600
|
149
|
1,749
|
|
2000
|
923
|
0
|
500
|
1,423
|
130
|
1,553
|
|
2001
|
712
|
0
|
443
|
1,155
|
113
|
1,268
|
|
2002
|
634
|
3
|
410
|
1,047
|
116
|
1,163
|
|
2003
|
617
|
-
|
388
|
1,005
|
128
|
1,133
|
|
2004
|
648
|
-
|
365
|
1,013
|
114
|
1,127
|
|
2005
|
657
|
-
|
331
|
988
|
103
|
1,091
|
|
2006
|
663
|
-
|
332
|
995
|
113
|
1,108
|
|
2007
|
686
|
-
|
355
|
1,041
|
121
|
1,162
|
1Beginning
in 1983, only operator data are available at this level of detail.
|
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