SEDIS - Thesaurus
Pittsburgh Coal  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Pittsburgh Coal | |
| RT | Ohio |
| Pennsylvania | |
| West Virginia | |
| Monongahela Group | |
| SN | Added to Thesaurus in 1989. |
| Pittsburgh coal basin | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Pittsburgh coal basin | |
| RT | coal fields |
| SN | Bituminous coal and steel producing region in the Pittsburgh area. |
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