Clue | Length | Answer |
---|---|---|
Oil-producing rocks | 6 letters | shales |
Layered rocks | 6 letters | shales |
oil-bearing rocks | 6 letters | shales |
Fissile rocks | 6 letters | shales |
tom who won the pulitzer prize for criticism for his wapo work | 6 letters | shales |
Some are bituminous | 6 letters | shales |
Terrigenous rocks | 6 letters | shales |
Synthetic fuel sources | 6 letters | shales |