| Answer | Crossword Clue |
|---|---|
| CARBONIC | Of a coal substance |
| slurry | thin mixture of an insoluble substance, as cement, clay, or coal, with a liquid, as water or oil |
| carbazole | A colorless crystalline substance obtained from coal tar, used in dye production |
| screened | Pass (a substance such as grain or coal) through a large sieve or screen, esp. so as to sort it into different sizes |
| TAR | Substance from coal. |
| SOOT | Substance from coal smoke. |
| pitch | sticky dark substance from coal tar |
