Related Clues:
- Fossil-yielding sedimentary rock
- Say nothing, given drink that may be full of gas!
- Rock that's 'fracked'
- Oil-yielding mineral
- Rock from which slate is formed
- Easily cleaved rock
- Cut into victim
- Oil source has excited the French
- One hunted for somewhere to get stone
- Prey; open excavation
- Product of clay compaction
- Potential victim of resistance to Russian leader in dock
- Introduction of secure, healthy, source of gas
- Excavation for extracting stone or slate
- Dig out victim