|
NIOSH Mining Safety and Health Research |
Distribution of Mines by Type of Operation and
Commodity, 2007 |
|
Type of Mining Operation
|
Coal |
Metal |
Nonmetal |
Stone |
Sand & Gravel |
Total |
| Underground (no Preparation Plant or Mill)
|
582 |
65 |
20 |
50 |
0 |
717 |
| Underground with Preparation Plant or Mill
|
46 |
31 |
27 |
63 |
0 |
167 |
| Surface1 (no Preparation Plant or Mill)
|
884 |
61 |
368 |
2,831 |
6,313 |
10,457 |
| Surface1 with Preparation Plant or Mill
|
85 |
55 |
124 |
1,436 |
0 |
1,700 |
| Dredge |
4 |
4 |
1 |
3 |
812 |
824 |
| Independent Shops and Yards |
38 |
3 |
0 |
17 |
0 |
58 |
| Preparation Plant or Mill only
|
382 |
53 |
165 |
213 |
0 |
813 |
| Office Employees only
|
9 |
6 |
20 |
26 |
74 |
135 |
|
Total
|
2,030 |
278 |
725 |
4,639 |
7,199 |
14,871 |
| 1Includes strip mines, open pits, quarries, coal auger mining and
culm banks, and other production, not elsewhere classified. |
| NOTE: Mines at which only independent contractors were working did not
show any employment and were not counted. |
| Data Source: MSHA |
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