Oil Shale
The Green River Formation contains the largest oil shale deposits in the world. The 213 billion tons of oil shale contain an estimated 3 trillion US barrels of shale oil, up to half of which is estimated as recoverable or about equal to all the entire world's proven reserves.
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Famous quotes containing the word oil:
“Mr. Chadband is a large yellow man, with a fat smile, and a general appearance of having a good deal of train oil in his system.”
—Charles Dickens (1812–1870)