2007, Number of Active Mines (employee hours > 0) by Underground/Surface by State by Commodity (Data source: MSHA)
Count
Underground or surface mining operation

Commodity based on CANVASS (recoded) Total
Coal Metal Nonmetal Stone Sand & gravel
Surface mine State/ territory Alabama 58 2 17 83 81 241
Alaska 1 22 0 31 84 138
Arizona 2 19 30 99 284 434
Arkansas 1 6 24 107 58 196
California 0 9 43 154 395 601
Colorado 6 6 10 54 284 360
Connecticut 0 0 1 38 78 117
Delaware 0 1 0 0 8 9
Florida 0 2 24 123 63 212
Georgia 0 1 53 124 44 222
Hawaii 0 0 0 33 30 63
Idaho 0 5 13 42 171 231
Illinois 19 1 8 142 124 294
Indiana 40 0 7 101 150 298
Iowa 0 1 8 133 158 300
Kansas 3 0 8 107 91 209
Kentucky 353 0 12 77 22 464
Louisiana 2 2 16 5 127 152
Maine 0 0 0 32 179 211
Maryland 21 0 2 40 25 88
Massachusetts 0 0 2 49 109 160
Michigan 0 6 5 34 440 485
Minnesota 0 14 4 72 488 578
Mississippi 1 0 13 5 84 103
Missouri 2 1 15 235 97 350
Montana 6 7 7 55 216 291
Nebraska 0 0 1 11 149 161
Nevada 0 27 28 25 136 216
New Hampshire 0 0 0 26 104 130
New Jersey 0 1 1 21 57 80
New Mexico 5 7 28 59 123 222
New York 0 3 12 193 356 564
North Carolina 0 1 45 127 95 268
North Dakota 5 0 3 0 101 109
Ohio 71 1 17 124 189 402
Oklahoma 7 0 21 161 90 279
Oregon 0 4 12 183 105 304
Pennsylvania 365 1 11 361 113 851
Rhode Island 0 0 0 9 20 29
South Carolina 0 1 20 36 52 109
South Dakota 0 2 7 17 126 152
Tennessee 23 2 23 165 51 264
Texas 15 12 59 350 297 733
Utah 10 7 16 38 224 295
Vermont 0 0 1 108 86 195
Virginia 96 1 11 105 50 263
Washington 2 3 7 116 215 343
West Virginia 264 3 2 31 3 303
Wisconsin 0 0 1 211 401 613
Wyoming 21 0 29 11 137 198
Puerto Rico 0 0 0 60 29 89
Virgin Islands 0 0 0 3 0 3
Total 1399 181 677 4526 7199 13982
Underground mine State/ territory Alabama 8 0 0 2
10
Alaska 0 6 0 0
6
Arizona 0 4 1 0
5
Arkansas 1 0 0 1
2
California 0 8 2 0
10
Colorado 8 16 0 1
25
Connecticut





Delaware





Florida





Georgia 0 0 0 6
6
Hawaii





Idaho 0 9 0 0
9
Illinois 16 0 0 10
26
Indiana 7 0 2 7
16
Iowa 0 0 2 11
13
Kansas 0 0 5 2
7
Kentucky 224 0 0 25
249
Louisiana 0 0 3 0
3
Maine





Maryland 2 0 0 1
3
Massachusetts





Michigan 0 1 1 0
2
Minnesota





Mississippi





Missouri 0 6 0 14
20
Montana 1 8 0 0
9
Nebraska 0 0 0 3
3
Nevada 0 18 1 0
19
New Hampshire





New Jersey





New Mexico 1 3 4 0
8
New York 0 1 3 1
5
North Carolina 0 1 0 0
1
North Dakota





Ohio 15 0 2 3
20
Oklahoma 2 0 0 1
3
Oregon 0 2 0 0
2
Pennsylvania 52 0 0 12
64
Rhode Island





South Carolina





South Dakota 0 1 0 0
1
Tennessee 7 5 0 5
17
Texas 0 0 3 2
5
Utah 13 5 8 1
27
Vermont 0 0 0 1
1
Virginia 77 0 1 1
79
Washington 0 3 0 0
3
West Virginia 195 0 0 3
198
Wisconsin 0 0 2 0
2
Wyoming 2 0 8 0
10
Puerto Rico





Virgin Islands





Total 631 97 48 113
889

Page last updated: April 17, 2009
Page last reviewed: March 30, 2009
Content Source: National Institute for Occupational Safety and Health (NIOSH) Mining Division