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Table 03. EMPLOYEE HOURS worked at Nonmetallic 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

11,438,025

2,179,736

13,617,761

20,783,131

38,710

495,864

21,317,705

1979

12,306,045

2,589,525

14,895,570

26,960,041

8,563

435,598

21,404,202

1980

12,358,364

3,425,920

15,784,284

21,693,176

8,770

235,872

21,937,818

1981

12,643,607

3,937,086

16,580,693

20,871,842

11,924

44,316

20,928,082

1982

10,608,220

4,100,370

14,708,590

13,558,942

23,056

39,470

13,621,468

1983 1/

8,098,523

1,499,524

9,598,047

13,541,934

245,367

34,541

13,821,842

1984

8,455,444

1,468,839

9,924,283

14,969,337

457,948

34,271

15,461,556

1985

7,637,052

1,356,430

8,993,482

14,267,580

433,691

34,162

14,735,433

1986

6,826,953

1,271,831

8,098,784

12,760,161

395,473

20,687

13,176,321

1987

6,617,507

1,251,169

7,868,676

12,694,901

250,355

-

12,945,256

1988

7,273,046

1,299,567

8,572,613

13,027,611

263,395

-

13,291,006

1989

7,578,462

1,394,173

8,972,635

13,015,545

288,386

-

13,303,931

1990

7,609,520

1,426,264

9,035,784

12,932,823

72,321

-

13,005,144

1991

7,419,300

1,217,164

8,636,464

12,168,823

184,038

-

12,352,861

1992

7,253,717

1,262,899

8,516,616

11,353,982

157,344

-

11,511,326

1993

6,710,232

1,202,545

7,912,777

10,881,579

39,857

-

10,921,436

1994

6,659,681

1,349,121

8,008,802

11,215,499

26,590

-

11,242,089

1995

6,486,790

1,142,803

7,629,593

11,337,739

24,473

-

11,362,212

1996

6,602,819

1,196,274

7,799,093

11,658,440

29,247

-

11,687,687

1997

6,457,444

823,770

7,281,214

11,420,435

29,578

-

11,450,013

1998

5,862,116

737,269

6,599,385

11,384,645

93,468

-

11,478,113

1999

5,437,330

836,185

6,273,515

10,937,456

118,365

34,912

11,090,733

2000

5,052,716

794,600

5,847,316

11,065,553

31,814

-

11,097,367

2001

5,183,266

795,107

5,978,373

10,305,812

33,761

-

10,339,573

2002

4,551,443

595,754

5,147,197

9,803,565

3,628

36,644

9,843,837

2003

4,607,584

657,552

5,265,136

9,697,640

89,813

30,918

9,818,371

2004

4,882,067

703,067

5,585,134

9,767,613

61,190

29,021

9,857,824

2005

4,779,692

746,577

5,526,269

9,456,852

169,819

31,804

9,658,475

2006

4,830,187

732,330

5,562,517

9,467,508

99,367

33,410

9,600,285

2007

4,955,690

784,587

5,740,277

9,212,741

205,526

33,469

9,451,736


 

 

Table 03. EMPLOYEE HOURS worked at Nonmetallic 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

34,935,466

169,429

51,763,083

86,867,978

13,982,793

100,850,771

1979

36,299,772

221,416

49,296,791

85,817,979

14,079,964

99,897,943

1980

37,722,102

20,934

46,325,866

84,068,902

13,237,153

97,306,055

1981

37,508,775

20,457

48,315,466

85,844,698

13,434,373

99,279,071

1982

28,330,058

26,347

32,595,385

60,951,790

11,236,241

72,188,031

1983 1/

23,419,889

22,630

35,796,479

59,238,998

10,835,475

70,074,473

1984

25,385,839

76,594

37,910,675

63,373,108

10,219,766

73,592,874

1985

23,728,915

57,331

36,478,821

60,265,067

9,774,470

70,039,537

1986

21,275,105

54,027

33,962,953

55,292,085

8,842,744

64,134,829

1987

20,813,932

41,516

34,262,951

55,118,399

8,626,196

63,744,595

1988

21,863,619

35,439

35,652,835

57,551,893

8,692,185

66,244,078

1989

22,276,566

9,083

35,732,634

58,018,283

8,773,429

66,791,712

1990

22,040,928

-

35,207,673

57,248,601

8,793,214

66,041,815

1991

20,989,325

-

34,220,388

55,209,713

8,528,409

63,738,122

1992

20,027,942

-

33,274,280

53,302,222

8,178,059

61,480,281

1993

18,834,213

-

31,597,388

50,431,601

7,829,213

58,260,814

1994

19,250,891

-

31,912,938

51,163,829

8,433,903

59,597,732

1995

18,991,805

-

32,110,896

51,102,701

8,171,338

59,274,039

1996

19,486,780

-

32,240,194

51,726,974

8,276,264

60,003,238

1997

18,731,227

-

32,224,515

50,955,742

8,228,283

59,184,025

1998

18,077,498

-

31,420,711

49,498,209

7,685,556

57,183,765

1999

17,364,248

-

29,854,780

47,219,028

7,438,658

54,657,686

2000

16,944,683

-

28,960,221

45,904,904

7,188,867

53,093,771

2001

16,317,946

-

27,301,597

43,619,543

6,940,732

50,560,275

2002

14,991,034

-

26,066,072

41,057,106

6,481,979

47,539,085

2003

15,083,507

-

25,543,639

40,627,146

6,241,688

46,868,834

2004

15,442,958

-

24,922,719

40,365,677

6,488,265

46,853,942

2005

15,184,744

-

24,843,443

40,028,187

6,188,882

46,217,069

2006

15,162,802

-

24,911,555

40,074,357

6,367,770

46,442,127

2007

15,192,013

-

24,690,048

39,882,061

6,648,748

46,530,809

 

1/ Beginning in 1983, only operator data are available at this level of detail.