Mine Safety and Health Administration (MSHA) - Mining Industry Accident, Injuries, Employment, and Production Statistics - Anthracite Mining Data - Table 03. EMPLOYEE HOURS worked at Metal/Nonmetal Operations in the United States, by Primary Activity, 1978-2006

Table 03. EMPLOYEE HOURS worked at Metal/Nonmetal¹Operations in the United States,

by Primary Activity, 1978-2007

Year	Underground Mines			Surface Mines
	Underground	Surf at UG	Total	Strip	Dredge	Other	Total
1978	51,917,265	11,129,167	63,046,432	186,507,927	13,615,218	634,413	200,757,558
1979	55,008,651	12,759,917	67,768,568	197,176,068	13,762,372	572,432	211,510,872
1980	54,219,498	14,546,201	68,765,699	186,113,104	12,202,712	435,896	198,751,712
1981	54,479,694	15,500,805	69,980,499	171,686,415	10,567,275	75,758	182,329,448
1982	37,696,085	12,168,240	49,864,325	90,001,978	5,016,534	52,466	95,070,978
1983	28,016,685	8,778,966	36,795,651	134,346,777	9,329,281	608,212	144,284,270
1984	28,691,406	6,891,301	35,582,707	147,047,501	10,147,424	86,366	157,281,291
1985	25,657,418	6,390,370	32,047,788	148,696,396	10,438,947	34,162	159,169,505
1986	23,660,452	5,700,956	29,361,408	151,864,379	10,481,069	20,687	162,366,135
1987	23,413,382	5,982,871	29,396,253	157,241,685	10,937,348	50	168,179,083
1988	26,082,102	6,687,266	32,769,368	165,691,563	11,277,116	-	176,968,679
1989	26,407,000	7,471,065	33,878,065	169,883,092	10,963,708	-	180,846,800
1990	26,581,189	7,514,931	34,096,120	170,114,864	11,044,767	-	181,159,631
1991	24,557,730	6,763,054	31,320,784	161,890,532	10,525,776	-	172,416,308
1992	22,530,524	6,657,733	29,188,257	160,938,773	10,480,119	-	156,418,892
1993	20,903,782	6,109,737	27,013,519	163,644,226	10,718,383	152,202	174,514,811
1994	21,902,019	5,951,673	27,853,692	170,504,950	10,884,126	1,434,841	182,823,917
1995	23,123,280	6,266,783	29,390,063	177,325,764	10,880,022	1,703,595	189,909,381
1996	24,027,284	6,059,860	30,087,144	179,275,269	10,606,859	1,482,500	191,364,628
1997	24,214,790	5,752,396	29,967,186	181,957,239	10,823,476	1,224,897	194,005,612
1998	23,519,861	5,165,287	28,685,148	187,717,623	10,713,392	731,001	194,162,016
1999	21,749,167	4,633,229	26,382,396	186,799,892	10,842,476	990,708	198,633,076
2000	20,448,008	5,641,181	26,089,189	183,884,215	10,773,790	627,808	195,245,813
2001	20,423,292	4,406,239	24,829,531	179,203,469	10,490,800	332,595	190,026,864
2002	17,392,935	3,596,342	20,989,277	171,453,449	10,088,450	211,432	181,753,331
2003	17,012,578	3,763,716	20,776,294	170,061,067	10,534,777	185,097	180,780,941
2004	18,185,275	4,390,532	22,575,804	179,935,564	11,047,861	253,224	191,236,649
2005	19,545,554	4,888,886	24,434,440	188,836,115	11,567,368	351,886	200,755,369
2006	21,091,097	5,359,264	26,450,361	199,501,813	11,564,955	441,006	211,507,774
2007	23,825,204	6,078,554	29,903,758	203,984,510	10,991,597	457,068	215,433,175

^{All
numbers include contractors.}

¹Includes stone, sand and gravel operations.

Table 03. EMPLOYEE HOURS worked at Metal/Nonmetal¹Operations 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	263,803,990	6,031,993	200,743,268	470,579,251	67,855,317	538,434,568
1979	279,279,440	5,161,573	210,765,320	495,206,333	70,761,906	565,968,239
1980	267,517,411	3,072,134	200,710,607	471,300,152	69,810,949	541,111,101
1981	252,309,947	3,257,058	199,263,265	454,830,270	68,019,278	522,849,548
1982	144,935,303	1,653,389	112,649,537	259,238,229	43,893,146	303,131,375
1983	181,079,921	2,013,394	144,554,382	327,647,697	52,785,709	380,433,406
1984	192,863,998	2,525,848	151,750,631	347,140,477	51,433,284	398,573,761
1985	191,217,293	2,065,004	146,589,486	339,871,783	49,622,297	389,494,080
1986	191,727,543	1,494,640	139,698,120	332,920,303	48,479,479	381,399,782
1987	197,575,336	1,587,722	145,241,698	344,404,756	49,325,585	393,730,341
1988	209,738,047	1,229,809	156,970,696	367,938,552	51,059,528	418,998,080
1989	214,724,865	1,247,893	161,176,616	377,149,374	53,101,363	430,250,737
1990	215,255,751	1,198,058	160,165,736	376,619,545	53,244,515	429,864,060
1991	203,737,092	1,132,953	156,022,296	360,892,341	52,575,649	413,467,990
1992	200,607,149	1,106,831	150,212,722	351,926,702	52,133,679	404,060,381
1993	201,528,330	1,066,417	147,296,458	349,891,205	49,654,019	399,545,224
1994	210,677,609	1,305,880	149,314,750	361,298,239	50,298,807	411,597,046
1995	219,299,444	1,504,357	153,202,781	374,006,582	50,390,928	424,397,510
1996	221,451,772	1,467,231	156,713,030	379,632,033	50,727,965	430,359,998
1997	223,972,798	1,360,494	157,779,708	383,113,000	51,558,622	434,668,622
1998	222,847,164	1,320,287	157,288,780	381,456,231	51,762,025	433,218,256
1999	225,015,472	1,167,448	155,242,670	381,425,590	50,999,898	432,425,488
2000	221,335,002	1,140,701	157,755,357	380,231,060	51,151,010	431,382,070
2001	214,856,395	1,070,678	147,358,353	363,285,426	48,919,898	412,205,324
2002	202,742,608	1,068,052	131,423,752	335,234,412	47,076,474	382,310,886
2003	201,557,235	1,019,450	128,159,224	330,735,909	46,398,629	377,134,538
2004	213,812,456	1,103,388	131,060,298	345,976,142	47,191,926	393,168,068
2005	225,189,809	1,194,298	136,185,892	362,569,999	48,166,512	410,736,511
2006	237,958,135	994,072	138,841,934	377,794,141	49,575,666	427,369,807
2007	245,336,933	1,013,561	143,399,366	389,749,860	51,763,016	441,512,876

^{All
numbers include contractors.}

¹Includes stone, sand and gravel operations.

Year