Table 23. Coal Mining Productivity by State, Mine Type, and Mine Production Range, 2006 (Short Tons Coal Produced per Employee per Hour) |
Coal-Producing State, Region[1],
and Mine Type |
Mine Production Range
(Thousand Short Tons) |
|
1,000 and Greater |
500 to 1,000 |
200 to 500 |
100 to 200 |
50 to 100 |
10 to 50 |
Less Than 10 |
| Alabama |
2.22 |
1.60 |
2.84 |
2.16 |
1.82 |
1.85 |
0.10 |
2.01 |
| Underground |
2.22 |
0.88 |
- |
1.59 |
0.85 |
- |
0.05 |
1.74 |
| Surface |
- |
2.93 |
2.84 |
2.23 |
2.08 |
2.11 |
0.14 |
2.51 |
| Alaska |
6.48 |
- |
- |
- |
- |
- |
- |
6.48 |
| Surface |
6.48 |
- |
- |
- |
- |
- |
- |
6.48 |
| Arizona |
7.79 |
- |
- |
- |
- |
- |
- |
7.69 |
| Surface |
7.79 |
- |
- |
- |
- |
- |
- |
7.69 |
| Arkansas |
- |
- |
- |
- |
- |
0.19 |
2.48 |
0.24 |
| Underground |
- |
- |
- |
- |
- |
0.19 |
- |
0.19 |
| Surface |
- |
- |
- |
- |
- |
- |
2.48 |
2.48 |
| Colorado |
8.08 |
21.25 |
4.95 |
- |
0.73 |
- |
- |
7.90 |
| Underground |
7.92 |
- |
4.33 |
- |
- |
- |
- |
7.72 |
| Surface |
8.64 |
21.25 |
6.73 |
- |
0.73 |
- |
- |
8.46 |
| Illinois |
3.93 |
8.56 |
2.37 |
- |
1.48 |
11.36 |
- |
3.70 |
| Underground |
3.81 |
- |
1.90 |
- |
1.48 |
- |
- |
3.52 |
| Surface |
5.18 |
8.56 |
3.52 |
- |
- |
11.36 |
- |
4.89 |
| Indiana |
5.09 |
6.98 |
3.35 |
- |
1.77 |
1.18 |
0.03 |
4.81 |
| Underground |
3.86 |
- |
2.50 |
- |
1.08 |
- |
- |
3.46 |
| Surface |
6.03 |
6.98 |
5.71 |
- |
2.66 |
1.18 |
0.05 |
5.82 |
| Kansas |
- |
- |
3.20 |
7.73 |
- |
- |
- |
3.64 |
| Surface |
- |
- |
3.20 |
7.73 |
- |
- |
- |
3.64 |
| Kentucky Total |
4.05 |
3.34 |
3.39 |
2.68 |
2.03 |
2.19 |
0.05 |
2.96 |
| Underground |
3.68 |
2.91 |
2.88 |
2.46 |
1.81 |
1.90 |
0.03 |
2.68 |
| Surface |
5.37 |
4.34 |
3.97 |
3.03 |
2.62 |
2.46 |
0.09 |
3.51 |
| Eastern |
4.01 |
3.32 |
3.36 |
2.72 |
2.05 |
2.25 |
0.05 |
2.78 |
| Underground |
3.02 |
2.91 |
2.87 |
2.54 |
1.93 |
1.90 |
0.04 |
2.37 |
| Surface |
5.27 |
4.35 |
3.93 |
3.00 |
2.38 |
2.58 |
0.08 |
3.45 |
| Western |
4.09 |
4.11 |
4.26 |
1.76 |
1.84 |
0.67 |
0.06 |
3.78 |
| Underground |
4.01 |
- |
3.28 |
1.03 |
0.47 |
- |
- |
3.69 |
| Surface |
6.51 |
4.11 |
4.94 |
3.88 |
4.62 |
0.67 |
0.37 |
4.54 |
| Louisiana |
7.64 |
8.81 |
- |
- |
- |
- |
- |
7.84 |
| Surface |
7.64 |
8.81 |
- |
- |
- |
- |
- |
7.84 |
| Maryland |
10.67 |
5.17 |
3.22 |
3.65 |
2.55 |
1.46 |
0.29 |
4.82 |
| Underground |
10.67 |
- |
2.85 |
3.26 |
- |
- |
- |
6.10 |
| Surface |
- |
5.17 |
3.80 |
3.89 |
2.55 |
1.46 |
1.41 |
3.81 |
| Mississippi |
10.38 |
- |
- |
- |
- |
- |
- |
10.38 |
| Surface |
10.38 |
- |
- |
- |
- |
- |
- |
10.38 |
| Missouri |
- |
- |
11.44 |
9.16 |
- |
- |
- |
10.20 |
| Surface |
- |
- |
11.44 |
9.16 |
- |
- |
- |
10.20 |
| Montana |
23.38 |
- |
4.87 |
- |
- |
- |
- |
21.98 |
| Underground |
- |
- |
2.65 |
- |
- |
- |
- |
2.65 |
| Surface |
23.38 |
- |
16.80 |
- |
- |
- |
- |
23.30 |
| New Mexico |
9.70 |
- |
- |
- |
- |
- |
- |
8.62 |
| Underground |
9.49 |
- |
- |
- |
- |
- |
- |
8.07 |
| Surface |
9.78 |
- |
- |
- |
- |
- |
- |
8.85 |
| North Dakota |
17.00 |
- |
- |
- |
- |
- |
- |
16.91 |
| Surface |
17.00 |
- |
- |
- |
- |
- |
- |
16.91 |
| Ohio |
5.45 |
3.93 |
4.19 |
3.07 |
2.02 |
1.75 |
0.07 |
4.04 |
| Underground |
5.45 |
4.27 |
5.01 |
2.72 |
- |
- |
- |
4.81 |
| Surface |
- |
3.69 |
3.80 |
3.16 |
2.02 |
1.75 |
0.11 |
3.06 |
| Oklahoma |
- |
- |
3.57 |
5.00 |
- |
0.48 |
0.67 |
3.35 |
| Underground |
- |
- |
3.22 |
- |
- |
0.30 |
- |
2.44 |
| Surface |
- |
- |
3.72 |
5.00 |
- |
1.50 |
0.67 |
3.78 |
| Pennsylvania Total |
5.20 |
3.47 |
4.00 |
2.84 |
2.54 |
2.48 |
0.19 |
3.90 |
| Underground |
5.20 |
3.98 |
4.05 |
2.72 |
2.57 |
1.42 |
0.05 |
4.52 |
| Surface |
- |
2.54 |
3.95 |
2.93 |
2.54 |
2.65 |
0.27 |
2.44 |
| Anthracite |
- |
- |
4.08 |
1.67 |
2.02 |
1.91 |
0.16 |
0.95 |
| Underground |
- |
- |
- |
1.67 |
- |
1.25 |
0.14 |
0.68 |
| Surface |
- |
- |
4.08 |
- |
2.02 |
2.07 |
0.17 |
1.04 |
| Bituminous |
5.20 |
3.47 |
3.99 |
2.95 |
2.78 |
2.75 |
0.21 |
4.21 |
| Underground |
5.20 |
3.98 |
4.05 |
2.97 |
2.57 |
1.58 |
- |
4.65 |
| Surface |
- |
2.54 |
3.94 |
2.93 |
2.81 |
2.88 |
0.44 |
2.87 |
| Tennessee |
- |
- |
2.44 |
2.41 |
2.38 |
1.57 |
0.07 |
2.06 |
| Underground |
- |
- |
2.62 |
- |
2.38 |
1.14 |
0.06 |
1.97 |
| Surface |
- |
- |
2.33 |
2.41 |
- |
2.14 |
0.08 |
2.14 |
| Texas |
10.11 |
4.43 |
- |
- |
- |
- |
- |
9.90 |
| Surface |
10.11 |
4.43 |
- |
- |
- |
- |
- |
9.90 |
| Utah |
7.19 |
3.78 |
2.30 |
- |
- |
1.21 |
0.03 |
6.15 |
| Underground |
7.19 |
3.78 |
2.30 |
- |
- |
1.21 |
0.03 |
6.18 |
| Surface |
- |
- |
- |
- |
- |
- |
- |
- |
| Virginia |
4.01 |
3.27 |
3.05 |
2.05 |
2.30 |
2.27 |
0.04 |
2.67 |
| Underground |
4.15 |
3.06 |
2.62 |
2.06 |
2.10 |
2.00 |
0.03 |
2.48 |
| Surface |
3.62 |
3.57 |
3.71 |
1.99 |
2.85 |
2.86 |
0.08 |
3.07 |
| Washington |
2.03 |
- |
- |
- |
- |
- |
- |
2.03 |
| Surface |
2.03 |
- |
- |
- |
- |
- |
- |
2.03 |
| West Virginia Total |
4.46 |
3.52 |
2.99 |
2.37 |
1.92 |
2.10 |
0.02 |
3.32 |
| Underground |
4.03 |
2.97 |
2.69 |
2.08 |
1.81 |
1.63 |
0.01 |
2.87 |
| Surface |
5.01 |
4.68 |
3.89 |
3.13 |
2.49 |
2.84 |
0.03 |
4.14 |
| Northern |
4.94 |
3.22 |
3.72 |
2.01 |
1.69 |
2.31 |
0.07 |
4.12 |
| Underground |
4.80 |
3.01 |
3.29 |
1.66 |
1.31 |
1.74 |
0.02 |
4.02 |
| Surface |
6.09 |
6.23 |
6.11 |
3.35 |
6.93 |
2.71 |
0.16 |
4.78 |
| Southern |
4.23 |
3.58 |
2.88 |
2.39 |
1.96 |
2.05 |
0.01 |
3.09 |
| Underground |
3.19 |
2.96 |
2.59 |
2.11 |
1.91 |
1.62 |
0.01 |
2.36 |
| Surface |
4.91 |
4.62 |
3.69 |
3.12 |
2.18 |
2.89 |
0.01 |
4.08 |
| Wyoming |
36.66 |
1.84 |
- |
- |
0.66 |
3.45 |
0.37 |
35.46 |
| Underground |
- |
1.84 |
- |
- |
- |
- |
- |
1.84 |
| Surface |
36.66 |
- |
- |
- |
0.66 |
3.45 |
0.37 |
36.24 |
| Appalachian Total |
4.39 |
3.24 |
3.23 |
2.59 |
2.10 |
2.18 |
0.06 |
3.13 |
| Underground |
4.17 |
2.82 |
2.88 |
2.36 |
1.91 |
1.72 |
0.03 |
2.95 |
| Surface |
4.98 |
4.05 |
3.70 |
2.88 |
2.41 |
2.51 |
0.11 |
3.45 |
| Northern |
5.20 |
3.62 |
3.94 |
2.90 |
2.34 |
2.32 |
0.15 |
4.02 |
| Underground |
5.16 |
3.60 |
3.81 |
2.60 |
1.64 |
1.52 |
0.03 |
4.40 |
| Surface |
6.09 |
3.65 |
4.07 |
3.09 |
2.53 |
2.45 |
0.24 |
3.02 |
| Central |
4.15 |
3.42 |
3.08 |
2.53 |
2.07 |
2.14 |
0.03 |
2.89 |
| Underground |
3.30 |
2.94 |
2.70 |
2.33 |
1.96 |
1.78 |
0.02 |
2.38 |
| Surface |
4.91 |
4.37 |
3.72 |
2.90 |
2.43 |
2.65 |
0.05 |
3.67 |
| Southern |
2.22 |
1.60 |
2.84 |
2.16 |
1.82 |
1.85 |
0.10 |
2.01 |
| Underground |
2.22 |
0.88 |
- |
1.59 |
0.85 |
- |
0.05 |
1.74 |
| Surface |
- |
2.93 |
2.84 |
2.23 |
2.08 |
2.11 |
0.14 |
2.51 |
| Interior Total |
5.52 |
6.50 |
3.24 |
3.44 |
1.74 |
0.58 |
0.04 |
5.10 |
| Underground |
3.89 |
- |
2.39 |
1.03 |
0.94 |
0.23 |
- |
3.54 |
| Surface |
8.15 |
6.50 |
4.27 |
5.72 |
3.70 |
1.31 |
0.10 |
7.35 |
| Illinois Basin |
4.33 |
6.66 |
3.04 |
1.76 |
1.74 |
1.28 |
0.03 |
4.07 |
| Underground |
3.89 |
- |
2.27 |
1.03 |
0.94 |
- |
- |
3.57 |
| Surface |
5.92 |
6.66 |
4.55 |
3.88 |
3.70 |
1.28 |
0.08 |
5.49 |
| Western Total |
21.55 |
4.01 |
4.32 |
- |
0.68 |
1.81 |
0.01 |
20.19 |
| Underground |
7.75 |
3.07 |
3.27 |
- |
- |
1.21 |
0.02 |
6.77 |
| Surface |
26.33 |
21.25 |
9.47 |
- |
0.68 |
3.45 |
0.00 |
25.70 |
| Powder River Basin |
37.97 |
- |
- |
- |
0.66 |
- |
- |
37.57 |
| Surface |
37.97 |
- |
- |
- |
0.66 |
- |
- |
37.57 |
| Uinta Region |
7.69 |
5.15 |
3.17 |
- |
0.73 |
1.21 |
0.03 |
7.11 |
| Underground |
7.55 |
3.78 |
3.17 |
- |
- |
1.21 |
0.03 |
6.92 |
| Surface |
8.64 |
21.25 |
- |
- |
0.73 |
- |
- |
8.41 |
| East of Miss. River |
4.41 |
3.36 |
3.22 |
2.57 |
2.08 |
2.17 |
0.06 |
3.29 |
| Underground |
4.08 |
2.82 |
2.84 |
2.33 |
1.82 |
1.72 |
0.02 |
3.06 |
| Surface |
5.34 |
4.29 |
3.74 |
2.89 |
2.49 |
2.47 |
0.11 |
3.74 |
| West of Miss. River |
19.85 |
4.47 |
4.02 |
6.60 |
0.68 |
0.55 |
0.03 |
18.33 |
| Underground |
7.75 |
3.07 |
3.26 |
- |
- |
0.36 |
0.02 |
6.62 |
| Surface |
23.25 |
8.09 |
4.81 |
6.60 |
0.68 |
2.42 |
0.04 |
22.27 |
| Subtotal |
9.80 |
3.40 |
3.25 |
2.61 |
2.03 |
2.09 |
0.06 |
6.27 |
| Underground |
4.58 |
2.84 |
2.85 |
2.33 |
1.82 |
1.57 |
0.02 |
3.37 |
| Surface |
16.34 |
4.41 |
3.79 |
2.97 |
2.34 |
2.47 |
0.11 |
10.19 |
| Refuse Recovery |
- |
- |
- |
8.64 |
- |
1.48 |
1.34 |
4.33 |
| U.S. Total |
9.80 |
3.40 |
3.25 |
2.65 |
2.03 |
2.08 |
0.06 |
6.26 |
|