| 11. | Seventy-eight percent of its 2009 anthracite production was exported.
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| 12. | Coal includes anthracite, bituminous coal, lignite, and peat.
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| 13. | The anthracite coal which greatly reduced their profile along the horizon.
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| 14. | In 1810, 350 tons of anthracite was mined in Pennsylvania.
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| 15. | They wanted to use rivers to more efficiently transport anthracite coal.
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| 16. | The rise of the railway system expanded the anthracite coal industry.
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| 17. | The Anthracite Valley Section is a crescent-shaped synclinal basin.
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| 18. | Zerbe Run is located just outside the Western Middle Anthracite Field.
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| 19. | But it is there, relentlessly burning through a mammoth anthracite vein.
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| 20. | Nesquehoning was established as a result of the anthracite coal mining industry.
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