Keywords: Oilshale.jpg oil shale on a coast near Kimmeridge on 18th August 2000 http //www soton ac uk/~imw/kimfire htm ropné břidlice na pobřeží blízko Kimmeridge 18 srpna 2000 http //web archive org/web/20070918045945/http //www fe doe gov/programs/reserves/npr/NPR_Oil_Shale_Program html http //fossil energy gov/images/programs/reserves/oilshale jpg US Department of Energy - DOE - Public domain 2000-08-18 uploaded by Mion 07 39 22 October 2006 UTC http //www soton ac uk/~imw/jpg/fireclo jpg probably the original image PD-USGov Oil shale |