Question: Genie Energy and which other oil and gas company, considered one of the seven 'Supermajor' oil companies, owns American Shale Oil, the developers of in-situ shale oil extraction technology in Rifle, Colorado?
Sentence (from "Union process"): The particularity of this process is that oil shale in the retort moves from the bottom upward to the top, countercurrent to the descending hot gases, by a mechanism known as a rock pump.
Relevant evidence: No