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Pages with the tag 'SHALE':
Oil source (5 letters)
Brick ingredient (5 letters)
Oil yielder (5 letters)
Lamp fuel (3 letters)
Flammable oil (8 letters)
Rock that may hold fossils (5 letters)
Some are bituminous (6 letters)
Source of shale oil (7 letters)
___ oil (5 letters)