Display "central appalachia" Hot keywords Ranking history.
Feb 16, 2006 ... Central Appalachia provides much of the country's coal, second only to Wyoming's Powder River Basin. In the United States, 100 tons of coal ...[source]
| Date Time | Rank | Info |
|---|---|---|
| 2009-02-13 22:52:51 | 16 | Feb 16, 2006 ... Central Appalachia provides much of the country's coal, second only to Wyoming's Powder River Basin. In the United States, 100 tons of coal ...[source] |
| 2009-02-13 21:52:43 | 11 | |