Oil Shale in US West Again Beckons Energy Companies

Big Oil could soon begin trying to melt petroleum on U.S. lands from oil shale, a resource the government says has huge potential but was so pricey to produce in the 1980s that companies walked away from it.

Royal Dutch Shell, Exxon Mobil Corp., Chevron Corp. and other companies are completing environmental impact statements on applications for eight research and development leases to produce oil from shale in Colorado and Utah.
Reuters