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

.54

-

-

1,115

3.83

1990

43

2.75

26

5.72

69

3.42

1,018

3.60

3

1.67

-

-

1,021

3.58

1991

58

3.96

18

8.04

76

4.00

863

3.33

2

1.89

-

-

865

3.33

1992

34

2.25

20

4.42

54

2.75

774

2.94

11

14.81

-

-

785

2.97

1993

44

2.85

16

3.63

60

3.02

810

2.97

4

4.60

-

-

814

2.97

1994

44

2.59

18

5.01

62

3.02

801

2.78

4

4.08

-

-

805

2.79

1995

29

1.69

8

2.56

37

1.83

769

2.66

4

4.94

-

-

773

2.67

1996

26

1.51

14

4.64

40

1.98

608

2.15

4

3.82

-

-

612

2.16

1997

26

1.44

10

3.27

36

1.70

658

2.28

7

8.89

-

-

665

2.30

1998

29

1.51

8

2.52

37

1.65

579

1.91

1

2.58

-

-

580

1.91

1999

19

.97

14

3.98

33

1.43

567

1.81

-

-

-

-

567

1.80

2000

19

.96

16

4.07

35

1.48

567

1.80

-

-

-

-

567

1.80

2001

32

1.66

14

3.38

46

1.97

490

1.56

-

-

-

-

490

1.56

2002

15

.80

10

2.22

25

1.07

446

1.43

1

2.42

-

-

447

1.43

2003

22

1.19

10

2.53

32

1.42

400

1.27

1

1.60

-

-

401

1.27

2004

20

1.03

14

3.53

34

1.45

435

1.32

-

-

-

-

435

1.32

2005

17

.79

20

4.91

37

1.45

427

1.23

-

-

-

-

427

1.23

2006

32

1.49

12

2.53

44

1.67

431

1.21

-

-

-

-

431

1.21

2007

15

.73

12

2.53

27

1.06

411

1.19

-

-

-

-

411

1.19

Year

Total Mining

Indp Shops/Yrds

Mills

Total w/o Office

Office

Grand Total

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

NDLs

IR

1978

1,257

3.53

15

4.14

1,410

3.06

2,682

3.27

17

.15

2,699

2.89

1979

893

2.37

8

2.53

1,024

2.11

1,925

2.22

12

.10

1,937

1.97

1980

618

1.74

9

3.63

851

1.85

1,478

1.81

2

.02

1,480

1.58

1981

454

1.48

2

1.04

754

1.82

1,210

1.67

3

.03

1,213

1.45

1982

181

1.20

-

-

223

1.23

404

1.21

1

.02

405

1.05

1983  1/

351

1.26

3

2.12

605

1.72

959

1.52

5

.05

964

1.32

1984

388

1.28

5

3.05

569

1.53

962

1.42

3

.03

965

1.24

1985

396

1.26

3

1.66

637

1.72

1,036

1.51

6

.06

1,042

1.32

1986

493

1.51

3

1.78

809

2.22

1,305

1.88

8

.08

1,313

1.64

1987

794

2.42

6

3.00

1,107

3.00

1,907

2.73

10

.10

1,917

2.39

1988

1,030

3.16

15

6.67

1,644

4.39

2,689

3.83

11

.11

2,700

3.35

1989

1,188

3.82

11

4.55

1,746

4.69

2,945

4.29

15

.14

2,960

3.74

1990

1,090

3.57

9

4.15

1,428

3.87

2,527

3.74

17

.16

2,544

3.26

1991

941

3.37

10

5.44

1,323

3.79

2,274

3.61

15

.15

2,289

3.13

1992

839

2.96

8

4.28

1,224

3.57

2,071

3.30

16

.16

2.087

2.86

1993

874

2.98

7

4.03

1,202

3.45

2,083

3.24

17

.17

2,100

2.82

1994

867

2.80

6

2.17

1,116

3.18

1,989

3.00

15

.15

2,004

2.62

1995

810

2.62

6

1.98

1,076

2.96

1,892

2.80

6

.06

1,898

2.45

1996

652

2.15

3

.87

994

2.65

1,649

2.42

8

.08

1,657

2.11

1997

701

2.26

12

3.84

901

2.36

1,614

2.32

12

.12

1,626

2.04

1998

617

1.89

6

1.90

858

2.21

1,481

2.06

12

.11

1,493

1.81

1999

600

1.78

8

2.95

842

2.16

1,450

1.99

14

.13

1,464

1.75

2000

602

1.78

10

4.17

799

2.05

1,411

1.93

9

.08

1,420

1.69

2001

536

1.59

5

2.06

779

2.05

1,320

1.83

8

.07

1,328

1.60

2002

472

1.40

9

3.75

631

1.75

1,112

1.59

7

.06

1,119

1.38

2003

433

1.28

8

3.24

599

1.70

1,040

1.50

3

.03

1,043

1.30

2004

469

1.33

4

1.27

587

1.65

1,060

1.49

9

.09

1,069

1.31

2005

464

1.24

5

1.60

639

1.77

1,108

1.50

10

.09

1,118

1.33

2006

475

1.24

8

2.87

600

1.67

1,083

1.45

6

.06

1,089

1.28

2007

438

1.18

4

1.54

504

1.44

946

1.31

5

.05

951

1.14