Crossword Clue:

Fuel from a mine

AnswerCrossword Clue
COALFuel from a mine
OREMetal from a mine
UNCUTLike diamonds from a mine
TRAMCarrier of coal from a mine
PEATFuel from a bog
PEATFuel from a marsh
PEATFuel from a fen
PEETFuel from a bog: Var.
BIODIESELFuel made from vegetable sources (and a 2006 dictionary addition)
ALGAEA Berkeley scientist has figured a way to make hydrogen fuel from these