| Answer | Crossword Clue |
|---|---|
| CANNEL | Type of coal. |
| SOFT | Type of coal |
| COB | Type of coal |
| LIGNITE | Type of coal |
| lignite | a type of coal |
| lignites | LIGNITE, a type of coal |
| lignitic | pertaining to lignite (a type of coal) |
| fusain | A crumbly, porous type of coal resembling wood charcoal, used in drawing |
| opencast | noting or pertaining to a type of surface mining in which coal and other flat-lying mineral deposits are removed by the excavation of long, narrow trenches |
