Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FIRE
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| R | L | O | R | T | E | P | F | I |
| E | L | Z | S | T | K | Y | I | L |
| N | I | A | A | S | O | G | R | E |
| E | G | E | C | X | M | P | E | U |
| R | H | S | L | I | S | S | O | F |
| G | T | L | W | T | M | U | H | L |
| Y | S | N | I | A | M | E | R | A |
| C | A | P | R | O | C | K | H | O |
| D | G | N | I | N | R | U | B | C |
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