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 Table 03. Average Number of Employees at Anthracite Mines in the United States,

by Primary Activity, 1978-2007

 

 

Year

Underground Mines

Surface Mines

 

Underground

Surf at UG

Total

Strip

Auger

Culm Bank

Dredge

Total

1978

468

83

551

1,289

-

206

7

1,502

1979

416

58

474

1,063

-

221

7

1,291

1980

426

56

482

1,418

-

202

8

1,628

1981

482

78

560

1,516

-

192

9

1,717

1982

513

90

603

1,412

-

172

11

1,595

19831

479

95

574

1,133

-

184

12

1,329

1984

513

110

623

1,129

-

199

13

1,341

1985

482

107

589

917

-

187

15

1,119

1986

515

123

638

976

-

216

13

1,205

1987

419

120

539

761

-

179

12

952

1988

391

128

519

683

-

180

9

872

1989

330

108

438

724

-

154

7

885

1990

317

99

416

695

-

250

4

949

1991

293

95

388

665

-

273

5

943

1992

267

97

364

625

-

309

4

938

1993

222

75

297

554

-

372

3

929

1994

207

73

280

598

-

301

4

903

1995

202

65

267

522

-

327

2

851

1996

186

60

246

572

-

319

3

894

1997

187

66

253

630

-

306

2

938

1998

180

70

250

657

-

248

-

905

1999

161

60

221

630

-

173

-

803