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There are 18 clues with the answer 'OILSHALE'
# CLUE
1.
Rock from which fuel may be extracted
2.
Rock source of fuel
3.
Sedimentary energy source
4.
Fossil-fuel source (2 wds.)
5.
Western Colorado fuel source
6.
Petroleum producer offers inducements well (3,5)
7.
Combustible rock
8.
Certain fuel source
9.
Crude alternative
10.
Sedimentary fuel source
11.
Fuel-yielding rock
12.
Fuel source
13.
Organic-rich fine-grained sedimentary rock
14.
Hallo - is energy briefly produced from this? (3,5)
15.
It holds Bakken wealth (2wds)
16.
Source of fuel and soil mixed well (3,5)
17.
Leo hails distribution of sedimentary rock (3,5)
18.
Sedimentary rock used as fuel (3,5)