Table 04. Number of HOURS WORKED
at Coal Mines in the
|
Underground
Mines |
Surface
Mines |
|||||||||||||||
Year |
Underground |
Surf
at UG |
Total |
Strip |
Auger |
Culm
Bank |
Dredge |
Total |
|||||||||
1978 |
193,794,718 |
23,569,960 |
217,364,678 |
128,683,555 |
731,435 |
378,060 |
23,922 |
129,816,972 |
|||||||||
1979 |
230,304,102 |
26,522,638 |
256,826,740 |
135,510,409 |
598,590 |
438,467 |
57,738 |
136,605,504 |
|||||||||
1980 |
222,870,843 |
25,675,431 |
248,546,274 |
135,138,201 |
435,796 |
444,437 |
93,698 |
136,112,132 |
|||||||||
1981 |
200,772,943 |
23,277,349 |
224,050,292 |
130,576,920 |
397,004 |
415,581 |
139,598 |
131,529,103 |
|||||||||
1982 |
202,557,495 |
22,954,235 |
225,511,730 |
126,125,400 |
467,057 |
541,853 |
138,659 |
127,272,969 |
|||||||||
1983 |
155,494,125 |
18,744,636 |
174,238,761 |
115,456,732 |
570,423 |
442,954 |
156,531 |
116,626,640 |
|||||||||
1984 |
168,158,329 |
19,445,063 |
187,603,392 |
126,303,153 |
549,037 |
488,186 |
158,823 |
127,499,199 |
|||||||||
1985 |
162,461,265 |
19,576,115 |
182,036,880 |
116,870,526 |
648,976 |
469,398 |
126,150 |
118,115,050 |
|||||||||
1986 |
151,166,953 |
19,034,396 |
170,201,349 |
109,267,927 |
608,980 |
589,878 |
112,868 |
110,579,653 |
|||||||||
1987 |
139,667,922 |
16,649,387 |
156,317,309 |
105,119,295 |
878,387 |
654,963 |
150,384 |
106,803,029 |
|||||||||
1988 |
133,721,086 |
16,060,832 |
149,781,918 |
100,834,103 |
969,369 |
588,348 |
170,408 |
102,562,228 |
|||||||||
1989 |
130,635,823 |
16,473,421 |
147,109,244 |
100,595,934 |
875,864 |
675,184 |
199,502 |
102,346,484 |
|||||||||
1990 |
136,021,939 |
17,325,525 |
153,347,464 |
102,862,419 |
836,174 |
791,649 |
192,039 |
104,682,281 |
|||||||||
1991 |
124,435,749 |
16,546,316 |
140,982,065 |
94,544,458 |
882,922 |
755,464 |
141,238 |
96,324,082 |
|||||||||
1992 |
116,013,668 |
16,251,448 |
132,265,116 |
92,377,668 |
799,054 |
857,272 |
114,879 |
94,148,873 |
|||||||||
1993 |
97,713,848 |
15,473,757 |
113,187,605 |
86,027,291 |
862,951 |
1,064,394 |
72,118 |
88,026,754 |
|||||||||
1994 |
102,556,106 |
15,206,980 |
117,763,086 |
87,518,041 |
936,203 |
929,062 |
97,912 |
89,481,218 |
|||||||||
1995 |
96,348,584 |
14,004,507 |
110,353,091 |
80,293,088 |
922,842 |
924,278 |
110,028 |
82,250,236 |
|||||||||
1996 |
93,530,286 |
13,833,572 |
107,363,858 |
78,168,209 |
1,162,645 |
891,821 |
174,130 |
80,396,805 |
|||||||||
1997 |
91,949,818 |
13,802,276 |
105,752,094 |
79,634,049 |
1,253,071 |
925,869 |
145,678 |
81,958,667 |
|||||||||
1998 |
88,231,397 |
12,925,813 |
101,157,210 |
78,434,109 |
1,175,045 |
862,405 |
384,511 |
80,856,070 |
|||||||||
1999 |
80,634,251 |
11,649,426 |
92,283,677 |
74,383,657 |
1,162,466 |
636,802 |
163,573 |
76,346,498 |
|||||||||
2000 |
74,680,266 |
11,480,214 |
86,160,480 |
69,984,140 |
986,363 |
724,170 |
191,496 |
71,886,169 |
|||||||||
2001 |
79,876,376 |
11,583,586 |
91,459,962 |
77,412,311 |
1,196,400 |
701,888 |
200,828 |
79,511,427 |
|||||||||
2002 |
74,657,800 |
11,046,101 |
85,703,901 |
75,353,030 |
1,178,053 |
629,537 |
115,243 |
77,275,863 |
|||||||||
2003 |
72,544,051 |
10,439,060 |
82,983,111 |
71,751,200 |
923,250 |
656,208 |
159,600 |
73,490,258 |
|||||||||
2004 |
78,180,620 |
10,845,491 |
89,026,111 |
77,530,926 |
1,094,013 |
888,705 |
109,267 |
79,622,911 |
|||||||||
2005 |
86,535,496 |
11,711,676 |
98,247,172 |
83,608,106 |
1,351,896 |
1,117,449 |
126,243 |
86,203,694 |
|||||||||
2006 |
91,000,929 |
12,609,265 |
103,610,194 |
87,551,261 |
1,472,123 |
1,155,870 |
98,284 |
90,277,538 |
|||||||||
2007 |
90,618,088 |
12,477,836 |
103,095,924 |
85,852,684 |
1,324,153 |
1,316,372 |
112,683 |
88,605,892 |
|||||||||
|
|
|
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|
|
|
|
|
|
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Table 04. Number of HOURS WORKED
at Coal Mines in the
Year |
Total
Mining |
Indp Shops/Yrds |
Prep
Plants |
Total
w/o Office |
Office |
Grand
Total |
1978 |
347,181,650 |
6,193,667 |
33,410,981 |
386,786,298 |
15,353,676 |
402,139,974 |
1979 |
393,432,444 |
7,596,878 |
40,733,250 |
441,762,372 |
17,602,290 |
459,364,662 |
1980 |
384,658,406 |
7,125,512 |
42,256,815 |
434,040,733 |
18,885,019 |
452,925,752 |
1981 |
355,579,395 |
5,913,029 |
41,516,747 |
403,009,171 |
19,156,127 |
422,165,298 |
1982 |
352,784,699 |
5,548,130 |
40,605,536 |
398,938,365 |
20,176,412 |
419,114,777 |
1983 |
290,865,401 |
5,119,037 |
34,944,666 |
330,929,104 |
19,035,543 |
349,964,647 |
1984 |
315,102,591 |
4,882,467 |
38,000,431 |
357,985,489 |
18,653,649 |
376,639,138 |
1985 |
300,152,430 |
3,801,682 |
37,377,939 |
341,332,051 |
17,866,726 |
359,198,777 |
1986 |
280,781,002 |
3,267,174 |
35,506,051 |
319,554,227 |
16,753,243 |
336,307,470 |
1987 |
263,120,338 |
2,628,954 |
33,778,861 |
299,528,153 |
15,671,298 |
315,199,451 |
1988 |
252,344,146 |
2,176,951 |
33,448,509 |
287,969,606 |
15,594,848 |
303,564,454 |
1989 |
249,455,728 |
1,880,450 |
34,680,089 |
286,016,267 |
16,064,992 |
302,081,259 |
1990 |
258,029,745 |
2,173,931 |
35,558,200 |
295,761,876 |
15,158,441 |
310,920,317 |
1991 |
237,306,147 |
2,134,856 |
34,208,799 |
273,649,802 |
14,490,454 |
288,140,256 |
1992 |
226,413,989 |
1,980,216 |
32,769,984 |
261,164,189 |
14,755,195 |
275,919,384 |
1993 |
201,214,359 |
1,698,221 |
29,300,457 |
232,213,037 |
14,074,802 |
246,287,839 |
1994 |
207,244,304 |
1,636,126 |
31,590,791 |
240,471,221 |
13,790,888 |
254,262,109 |
1995 |
192,603,327 |
1,445,750 |
28,905,698 |
222,954,775 |
13,200,912 |
236,155,687 |
1996 |
187,760,663 |
1,161,384 |
28,521,022 |
217,443,069 |
12,166,183 |
229,609,252 |
1997 |
187,710,761 |
939,553 |
27,697,722 |
216,348,036 |
12,231,636 |
228,579,672 |
1998 |
182,013,280 |
1,039,878 |
27,352,002 |
210,405,160 |
11,416,567 |
221,821,727 |
1999 |
168,630,175 |
1,033,745 |
25,601,705 |
195,265,625 |
10,458,072 |
205,723,697 |
2000 |
158,046,649 |
1,157,000 |
24,348,076 |
183,551,725 |
9,954,694 |
193,506,419 |
2001 |
170,971,389 |
1,116,804 |
26,294,219 |
198,382,412 |
10,390,496 |
208,772,908 |
2002 |
162,979,764 |
1,169,075 |
26,643,102 |
190,791,941 |
9,575,966 |
200,367,907 |
2003 |
156,473,369 |
1,146,588 |
25,427,265 |
183,047,222 |
9,036,782 |
192,084,004 |
2004 |
168,649,022 |
1,400,329 |
26,017,595 |
196,066,946 |
8,930,315 |
204,997,261 |
2005 |
184,450,866 |
1,649,101 |
28,539,629 |
214,639,596 |
9,681,799 |
224,321,395 |
2006 |
193,887,732 |
1,626,953 |
30,453,014 |
225,967,699 |
9,178,375 |
235,146,074 |
191,701,816 |
1,618,756 |
28,762,239 |
222,082,811 |
9,929,407 |
232,012,218 |
All numbers include contractors.