COAL

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Across
  1. 2. will we ever run out of coal
  2. 4. what the price of coal did
  3. 6. the number of tons loaded in a folk tune
  4. 7. prefix of coniosis, for many 8-acrosses
  5. 8. coal providers
  6. 10. the color of coal
  7. 12. trait which, when high, increases the price of coal
  8. 13. the percentage of the nation's coal that 15-cross accounts for
  9. 14. fragrant plant that thrives in poor soils
  10. 15. state that is home to most of the coal in the US
Down
  1. 1. that which coal forms beneath
  2. 3. primo carbonaceous material
  3. 5. type of mining that destroys ecosystems
  4. 6. industry to which coal is essential
  5. 9. coal's ranking in share of world energy production
  6. 11. songbird in a coalmine, famously