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Date: 2011-05-23 18:53:29Synthetic fuels Petroleum production Shell in situ conversion process Shale oil Shale oil extraction ExxonMobil Electrofrac Oil shale industry American Shale Oil Petroleum Energy Oil shale | Add to Reading ListSource URL: www.ceri-mines.orgDownload Document from Source WebsiteFile Size: 447,50 KBShare Document on Facebook |