Table 02. Average Number of EMPLOYEES at Stone Operations
in
the United States,
by Primary Activity, 1978-2007
|
Underground
Mines
|
Surface
Mines
|
Year
|
Underground
|
Surf at UG
|
Total
|
Strip
|
Dredge
|
Other
|
Total
|
1978
|
1,882
|
528
|
2,410
|
35,657
|
342
|
-
|
35,999
|
1979
|
1,921
|
479
|
2,400
|
38,731
|
371
|
-
|
39,102
|
1980
|
1,876
|
434
|
2,310
|
37,402
|
296
|
-
|
37,698
|
1981
|
1,649
|
432
|
2,081
|
34,069
|
323
|
-
|
34,392
|
1982
|
1,474
|
450
|
1,924
|
29,039
|
201
|
-
|
29,240
|
1983
|
1,357
|
411
|
1,768
|
29,336
|
151
|
-
|
29,487
|
1984
|
1,494
|
396
|
1,890
|
30,917
|
184
|
-
|
31,101
|
1985
|
1,435
|
432
|
1,867
|
31,823
|
237
|
-
|
32,060
|
1986
|
1,470
|
361
|
1,831
|
31,428
|
199
|
-
|
31,627
|
1987
|
1,486
|
392
|
1,878
|
31,074
|
217
|
-
|
31,291
|
1988
|
1,469
|
452
|
1,921
|
30,970
|
147
|
-
|
31,117
|
1989
|
1,537
|
482
|
2,019
|
29,746
|
166
|
-
|
29,912
|
1990
|
1,547
|
492
|
2,039
|
28,949
|
178
|
-
|
29,127
|
1991
|
1,495
|
449
|
1,944
|
27,521
|
111
|
-
|
27,632
|
1992
|
1,504
|
489
|
1,993
|
27,465
|
85
|
-
|
27,550
|
1993
|
1,535
|
454
|
1,989
|
27,843
|
87
|
-
|
27,930
|
1994
|
1,617
|
339
|
1,956
|
29,282
|
97
|
-
|
29,379
|
1995
|
1,617
|
323
|
1,940
|
28,928
|
100
|
-
|
29,028
|
1996
|
1,582
|
290
|
1,872
|
28,225
|
108
|
-
|
28,333
|
1997
|
1,650
|
289
|
1,939
|
29,010
|
95
|
-
|
29,105
|
1998
|
1,727
|
334
|
2,061
|
30,024
|
54
|
-
|
30,078
|
1999
|
1,743
|
356
|
2,099
|
31,221
|
42
|
-
|
31,263
|
2000
|
1,816
|
415
|
2,231
|
32,030
|
71
|
5
|
32,106
|
2001
|
1,810
|
419
|
2,229
|
32,222
|
89
|
-
|
32,311
|
2002
|
1,829
|
453
|
2,282
|
35,533
|
60
|
-
|
32,593
|
2003
|
1,746
|
372
|
2,118
|
32,425
|
54
|
-
|
32,479
|
2004
|
1,768
|
408
|
2,176
|
32,968
|
37
|
-
|
33,005
|
2005
|
1,889
|
363
|
2,252
|
34,263
|
27
|
-
|
34,290
|
2006
|
1,877
|
424
|
2,301
|
35,464
|
24
|
-
|
35,488
|
2007
|
1,845
|
446
|
2,291
|
35,391
|
31
|
-
|
35,422
|
Table
02. Average Number of EMPLOYEES at Stone 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
|
38,409
|
325
|
45,427
|
84,161
|
11,870
|
96,031
|
1979
|
41,502
|
298
|
48,370
|
90,170
|
12,482
|
102,652
|
1980
|
40,008
|
214
|
46,969
|
87,191
|
12,487
|
99,678
|
1981
|
36,473
|
165
|
43,792
|
80,430
|
11,861
|
92,291
|
1982
|
31,164
|
155
|
36,762
|
68,081
|
10,928
|
79,009
|
1983
1/
|
31,255
|
139
|
35,640
|
67,034
|
10,694
|
77,728
|
1984
|
32,991
|
146
|
36,797
|
69,934
|
11,014
|
80,948
|
1985
|
33,927
|
159
|
36,703
|
70,789
|
11,031
|
81,820
|
1986
|
33,458
|
144
|
35,629
|
69,231
|
11,049
|
80,280
|
1987
|
33,169
|
163
|
35,313
|
68,645
|
10,690
|
79,335
|
1988
|
33,038
|
233
|
36,075
|
69,346
|
10,675
|
80,021
|
1989
|
31,931
|
229
|
35,658
|
67,818
|
10,963
|
78,781
|
1990
|
31,166
|
205
|
35,486
|
66,857
|
11,089
|
77,946
|
1991
|
29,576
|
169
|
34,080
|
63,825
|
10,971
|
74,796
|
1992
|
29,543
|
178
|
33,393
|
63,114
|
10,914
|
74,028
|
1993
|
29,919
|
169
|
33,088
|
63,176
|
11,013
|
74,189
|
1994
|
31,335
|
262
|
33,030
|
64,627
|
10,723
|
75,350
|
1995
|
30,968
|
283
|
34,083
|
65,334
|
10,604
|
75,938
|
1996
|
30,205
|
298
|
34,953
|
65,456
|
10,563
|
76,019
|
1997
|
31,044
|
289
|
35,417
|
66,750
|
10,840
|
77,590
|
1998
|
32,139
|
283
|
36,077
|
68,499
|
11,078
|
79,577
|
1999
|
33,362
|
263
|
36,105
|
69,730
|
11,683
|
81,413
|
2000
|
34,337
|
239
|
36,040
|
70,616
|
11,763
|
82,379
|
2001
|
34,540
|
248
|
35,342
|
70,130
|
11,457
|
81,587
|
2002
|
34,875
|
265
|
33,703
|
68,843
|
11,711
|
80,554
|
2003
|
34,597
|
259
|
33,181
|
68,037
|
11,370
|
79,407
|
2004
|
35,181
|
299
|
32,937
|
68,417
|
11,189
|
79,606
|
2005
|
36,542
|
289
|
32,928
|
69,759
|
11,246
|
81,005
|
2006
|
37,789
|
274
|
33,090
|
71,153
|
11,430
|
82,583
|
2007
|
37,713
|
273
|
32,925
|
70,911
|
11,807
|
82,718
|
|