Answer | Crossword Clue |
---|---|
SHALES | Synthetic fuel sources |
synfuels | synthetic fuel |
synfuel | synthetic fuel |
SNG | Synthetic fuel: Abbr. |
ENERGYBARS | Fuel sources |
PEATBOGS | Fuel sources |
PEATS | Fuel sources |
BIODIESEL | Fuel made from vegetable sources (and a 2006 dictionary addition) |