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Table 03. EMPLOYEE HOURS worked at Sand

and Gravel Operations in the United States,

by Primary Activity, 1978-2007

 

SURFACE MINES

Year

Strip

Dredge

Total w/o Office

Office

Grand Total

1978

51,579,622

11,919,502

63,499,124

9,175,268

72,674,392

1979

54,058,767

12,047,996

66,106,763

9,281,347

75,388,110

1980

49,065,895

10,630,737

59,696,632

8,937,062

68,633,694

1981

42,247,365

9,078,120

51,325,485

8,222,153

59,547,638

1982

19,694,121

4,027,351

23,721,472

3,828,853

27,550,325

1983 1/

39,469,317

8,069,388

47,538,705

7,613,469

55,152,174

1984

43,821,731

8,454,774

52,276,505

8,113,256

60,389,761

1985

46,739,822

8,485,261

55,225,083

8,549,730

63,774,813

1986

49,324,791

8,558,449

57,883,240

8,889,523

66,772,763

1987

50,233,740

9,022,771

59,256,511

9,442,772

68,699,283

1988

50,981,758

9,379,164

60,360,922

9,723,607

70,084,529

1989

51,108,529

9,179,750

60,288,279

9,952,315

70,240,594

1990

50,306,955

9,548,144

59,855,099

10,047,213

69,902,312

1991

46,256,443

9,155,976

55,412,419

9,569,394

64,981,813

1992

46,261,833

9,210,601

55,472,434

9,500,654

64,973,088

1993

46,980,157

9,474,952

56,455,109

9,392,121

65,847,230

1994

49,096,503

9,824,191

58,920,694

9,372,980

68,293,674

1995

49,560,452

9,666,465

59,226,917

9,346,484

68,573,401

1996

50,877,799

9,123,295

60,001,094

9,313,845

69,314,939

1997

52,723,419

9,372,539

62,095,958

9,465,320

71,561,278

1998

55,543,921

9,656,729

65,200,650

9,786,082

74,986,732

1999

58,943,787

9,779,580

68,723,367

10,144,183

78,867,550

2000

58,364,286

9,663,508

68,027,794

10,067,772

78,095,566

2001

57,665,819

9,421,099

67,086,918

9,864,511

76,951,429

2002

56,174,648

9,332,106

65,506,754

9,791,248

75,298,002

2003

55,449,745

9,503,915

64,953,660

9,820,550

74,774,210

2004

56,268,999

10,458,369

66,727,368

9,889,027

76,616,395

2005

57,635,799

10,879,771

68,515,570

9,911,272

78,426,842

2006

58,835,484

10,863,959

69,699,443

9,892,418

79,591,861

2007

56,663,169

10,163,449

66,826,618

9,853,821

76,680,439

 

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