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Table 06. Number of NO DAYS LOST (NDL) Injuries and NDL Incidence

 Rates (IR) at Sand and Gravel Operations in the United States,

by Primary Activity, 1978-2007


 

SURFACE MINES

 

Strip

Dredge

Total w/o office

Office

Total

Year

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

1978

605

2.35

210

3.52

815

2.57

6

.13

821

2.26

1979

526

1.95

93

1.54

619

1.87

7

.15

626

1.66

1980

308

1.26

72

1.35

380

1.27

2

.04

382

1.11

1981

257

1.22

64

1.41

321

1.25

6

.15

327

1.10

1982

80

.81

23

1.14

103

.87

1

.05

104

.75

1983  1/

215

1.09

24

.59

239

1.01

2

.05

241

.87

1984

252

1.15

33

.78

285

1.09

2

.05

287

.95

1985

306

1.31

40

.94

346

1.25

2

.05

348

1.09

1986

373

1.51

61

1.43

434

1.50

1

.02

435

1.30

1987

498

1.98

102

2.26

600

2.03

2

.04

602

1.75

1988

620

2.43

180

3.84

800

2.65

8

.16

808

2.31

1989

814

3.19

182

3.97

996

3.30

6

.12

1,002

2.85

1990

673

2.68

170

3.56

843

2.82

11

.16

854

2.44

1991

666

2.88

135

2.95

801

2.89

8

.17

809

2.49

1992

619

.68

144

3.13

763

.75

5

.11

768

2.36

1993

565

2.41

130

2.74

695

2.46

6

.13

701

2.13

1994

531

2.16

117

2.38

648