The last barrel ///

If Edwin Drake would have drilled his 75-ft oil discovery well in northwestern Pennsylvania, down another 3,900 ft, he might have discovered vast quantities of natural gas in the Marcellus shale.

Log in to view this article.

Not yet a subscriber?  Get started now for immediate access to this content and more.

World-Oil-Free-Trial-2015.jpg

World-Oil-Premium-Subscribe-2015.jpg

Already a subscriber but don’t have an online account? Contact our customer service.