rock oil

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But by fracking the rock, oil flowed from the shale.

From The Wall Street Journal • Apr. 8, 2014

It has in one part a spring of petroleum or rock oil, and one of its mountains is a volcano.

From A General History and Collection of Voyages and Travels — Volume 06 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time by Kerr, Robert

The gold mines of California and of Australia are too well known to require mention; but we must not forget the rock oil, concealed for ages in the North American continent.

From The Mines and its Wonders by Kingston, William Henry Giles

Both Townsend and Drake would have died richer men had they never heard of the Pennsylvania rock oil.

From Inventors by Hubert, Philip Gengembre

In the late fifties Mr. George H. Bissell had become interested in rock oil, not as an embrocation and as a cure for most human ills, but as a light-giving material.

From The Age of Big Business; a chronicle of the captains of industry by Hendrick, Burton Jesse