Definitions
There is 1 meaning of the phrase
Oil Shale.
Oil Shale - as a noun
Shale from which oil can be obtained by heating
Example Sentences
"The extraction of oil shale is an expensive and challenging process."
"Many countries possess significant reserves of oil shale."
"The environmental impacts of oil shale mining are a concern."
"Estonia is known for its extensive oil shale deposits."
"The production of oil shale requires specialized technologies."
