| Rating | Solver | Clue |
|---|---|---|
| ASPHALT | Mineral pitch | |
| PITCHBLENDE | A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite. | |
| BITUMEN | Mineral pitch; a black, tarry substance, burning with a bright flame; Jew's pitch. It occurs as an abundant natural product in many places, as ... | |
| ASPHALTUM | Mineral pitch, Jews' pitch, or compact native bitumen. It is brittle, of a black or brown color and high luster on a surface of fracture; it me... |