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

Stone Operations in the United States, by Primary Activity, 1978-2007

 

 

 

 

Underground Mines

Surface Mines

Year

Underground

Surf at UG

Total

Strip

Dredge

Other

Total

 

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

1978

56

3.00

22

4.83

78

3.36

1,174

3.58

5

1.17

-

-

1,179

3.55

1979

33

1.70

13

2.70

46

1.90

847

2.44

-

-

-

-

847

2.40

1980

24

1.35

10

2.39

34

1.55

584

1.78

-

-

-

-

584

1.75

1981

18

1.14

6

1.46

24

1.21

430

1.52

-

-

-

-

430

1.50

1982

15

1.10

4

.99

19

1.07

162

1.22

-

-

-

-

162

1.21

1983  1/

15

1.16

2

.55

17

1.03

334

1.28

-

-

-

-

334

1.27

1984

16

1.12

6

1.55

22

1.21

366

1.29

-

-

-

-

366

1.29

1985

14

1.00

12

2.92

26

1.44

369

1.26

1

.34

-

-

370

1.25

1986

32

2.19

5

1.38

37

2.03

456

1.49

-

-

-

-

456

1.48

1987

37

2.56

10

2.69

47

2.59

747

2.43

-

-

-

-

747

2.41

1988

50

3.33

27

6.55

77

4.02

952

3.12

1

.52

-

-

953

3.11

1989

47

3.10

26

6.26

73

3.78

1,114

3.85

1