Pa. fourth in coal production

Top 10 in total coal mine production by state from 2002 through 2013 in U.S. short tons:

Wyoming: 5,020,286,763

West Virginia: 1,695,406,542

Kentucky: 1,319,408,558

Pennsylvania: 747,680,984

Texas: 519,793,454

Montana: 489,872,435

Illinois: 432,414,421

Indiana: 429,969,939

Colorado: 386,722,816

North Dakota: 353,411,262

Notes:

- In all, 26 states reported coal mine production totaling 13,146,167,299 short tons from 2002 to 2013.

- Pennsylvania's production was at a high of 68,393,192 in 2002 and a low of 54,718,802 in 2012. It rebounded slightly in 2013 to 55,126,487.

Source: AP